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virtualcallstub.cpp
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virtualcallstub.cpp
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
//
// File: VirtualCallStub.CPP
//
// This file contains the virtual call stub manager and caches
//
//
//
// ============================================================================
#include "common.h"
#include "array.h"
#ifdef FEATURE_PREJIT
#include "compile.h"
#endif
#ifdef FEATURE_PERFMAP
#include "perfmap.h"
#endif
#ifndef DACCESS_COMPILE
//@TODO: make these conditional on whether logs are being produced
//instrumentation counters
UINT32 g_site_counter = 0; //# of call sites
UINT32 g_site_write = 0; //# of call site backpatch writes
UINT32 g_site_write_poly = 0; //# of call site backpatch writes to point to resolve stubs
UINT32 g_site_write_mono = 0; //# of call site backpatch writes to point to dispatch stubs
UINT32 g_stub_lookup_counter = 0; //# of lookup stubs
UINT32 g_stub_mono_counter = 0; //# of dispatch stubs
UINT32 g_stub_poly_counter = 0; //# of resolve stubs
UINT32 g_stub_vtable_counter = 0; //# of vtable call stubs
UINT32 g_stub_space = 0; //# of bytes of stubs
UINT32 g_reclaim_counter = 0; //# of times a ReclaimAll was performed
UINT32 g_worker_call = 0; //# of calls into ResolveWorker
UINT32 g_worker_call_no_patch = 0;
UINT32 g_worker_collide_to_mono = 0; //# of times we converted a poly stub to a mono stub instead of writing the cache entry
UINT32 g_external_call = 0; //# of calls into GetTarget(token, pMT)
UINT32 g_external_call_no_patch = 0;
UINT32 g_insert_cache_external = 0; //# of times Insert was called for IK_EXTERNAL
UINT32 g_insert_cache_shared = 0; //# of times Insert was called for IK_SHARED
UINT32 g_insert_cache_dispatch = 0; //# of times Insert was called for IK_DISPATCH
UINT32 g_insert_cache_resolve = 0; //# of times Insert was called for IK_RESOLVE
UINT32 g_insert_cache_hit = 0; //# of times Insert found an empty cache entry
UINT32 g_insert_cache_miss = 0; //# of times Insert already had a matching cache entry
UINT32 g_insert_cache_collide = 0; //# of times Insert found a used cache entry
UINT32 g_insert_cache_write = 0; //# of times Insert wrote a cache entry
UINT32 g_cache_entry_counter = 0; //# of cache structs
UINT32 g_cache_entry_space = 0; //# of bytes used by cache lookup structs
UINT32 g_call_lookup_counter = 0; //# of times lookup stubs entered
UINT32 g_mono_call_counter = 0; //# of time dispatch stubs entered
UINT32 g_mono_miss_counter = 0; //# of times expected MT did not match actual MT (dispatch stubs)
UINT32 g_poly_call_counter = 0; //# of times resolve stubs entered
UINT32 g_poly_miss_counter = 0; //# of times cache missed (resolve stub)
UINT32 g_chained_lookup_call_counter = 0; //# of hits in a chained lookup
UINT32 g_chained_lookup_miss_counter = 0; //# of misses in a chained lookup
UINT32 g_chained_lookup_external_call_counter = 0; //# of hits in an external chained lookup
UINT32 g_chained_lookup_external_miss_counter = 0; //# of misses in an external chained lookup
UINT32 g_chained_entry_promoted = 0; //# of times a cache entry is promoted to the start of the chain
UINT32 g_bucket_space = 0; //# of bytes in caches and tables, not including the stubs themselves
UINT32 g_bucket_space_dead = 0; //# of bytes of abandoned buckets not yet recycled
#endif // !DACCESS_COMPILE
// This is the number of times a successful chain lookup will occur before the
// entry is promoted to the front of the chain. This is declared as extern because
// the default value (CALL_STUB_CACHE_INITIAL_SUCCESS_COUNT) is defined in the header.
#ifdef _TARGET_ARM64_
extern "C" size_t g_dispatch_cache_chain_success_counter;
#else
extern size_t g_dispatch_cache_chain_success_counter;
#endif
#define DECLARE_DATA
#include "virtualcallstub.h"
#undef DECLARE_DATA
#include "profilepriv.h"
#include "contractimpl.h"
SPTR_IMPL_INIT(VirtualCallStubManagerManager, VirtualCallStubManagerManager, g_pManager, NULL);
#ifndef DACCESS_COMPILE
#ifdef STUB_LOGGING
UINT32 STUB_MISS_COUNT_VALUE = 100;
UINT32 STUB_COLLIDE_WRITE_PCT = 100;
UINT32 STUB_COLLIDE_MONO_PCT = 0;
#endif // STUB_LOGGING
FastTable* BucketTable::dead = NULL; //linked list of the abandoned buckets
DispatchCache *g_resolveCache = NULL; //cache of dispatch stubs for in line lookup by resolve stubs.
size_t g_dispatch_cache_chain_success_counter = CALL_STUB_CACHE_INITIAL_SUCCESS_COUNT;
#ifdef STUB_LOGGING
UINT32 g_resetCacheCounter;
UINT32 g_resetCacheIncr;
UINT32 g_dumpLogCounter;
UINT32 g_dumpLogIncr;
#endif // STUB_LOGGING
//@TODO: use the existing logging mechanisms. for now we write to a file.
HANDLE g_hStubLogFile;
void VirtualCallStubManager::StartupLogging()
{
CONTRACTL
{
NOTHROW;
GC_TRIGGERS;
FORBID_FAULT;
}
CONTRACTL_END
GCX_PREEMP();
EX_TRY
{
FAULT_NOT_FATAL(); // We handle filecreation problems locally
SString str;
str.Printf(W("StubLog_%d.log"), GetCurrentProcessId());
g_hStubLogFile = WszCreateFile (str.GetUnicode(),
GENERIC_WRITE,
0,
0,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
0);
}
EX_CATCH
{
}
EX_END_CATCH(SwallowAllExceptions)
if (g_hStubLogFile == INVALID_HANDLE_VALUE) {
g_hStubLogFile = NULL;
}
}
#define OUTPUT_FORMAT_INT "\t%-30s %d\r\n"
#define OUTPUT_FORMAT_PCT "\t%-30s %#5.2f%%\r\n"
#define OUTPUT_FORMAT_INT_PCT "\t%-30s %5d (%#5.2f%%)\r\n"
void VirtualCallStubManager::LoggingDump()
{
CONTRACTL
{
NOTHROW;
GC_TRIGGERS;
FORBID_FAULT;
}
CONTRACTL_END
VirtualCallStubManagerIterator it =
VirtualCallStubManagerManager::GlobalManager()->IterateVirtualCallStubManagers();
while (it.Next())
{
it.Current()->LogStats();
}
g_resolveCache->LogStats();
// Temp space to use for formatting the output.
static const int FMT_STR_SIZE = 160;
char szPrintStr[FMT_STR_SIZE];
DWORD dwWriteByte;
if(g_hStubLogFile)
{
#ifdef STUB_LOGGING
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\nstub tuning parameters\r\n");
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\t%-30s %3d (0x%02x)\r\n", "STUB_MISS_COUNT_VALUE",
STUB_MISS_COUNT_VALUE, STUB_MISS_COUNT_VALUE);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\t%-30s %3d%% (0x%02x)\r\n", "STUB_COLLIDE_WRITE_PCT",
STUB_COLLIDE_WRITE_PCT, STUB_COLLIDE_WRITE_PCT);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\t%-30s %3d%% (0x%02x)\r\n", "STUB_COLLIDE_MONO_PCT",
STUB_COLLIDE_MONO_PCT, STUB_COLLIDE_MONO_PCT);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\t%-30s %3d%% (0x%02x)\r\n", "DumpLogCounter",
g_dumpLogCounter, g_dumpLogCounter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\t%-30s %3d%% (0x%02x)\r\n", "DumpLogIncr",
g_dumpLogCounter, g_dumpLogIncr);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\t%-30s %3d%% (0x%02x)\r\n", "ResetCacheCounter",
g_resetCacheCounter, g_resetCacheCounter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\t%-30s %3d%% (0x%02x)\r\n", "ResetCacheIncr",
g_resetCacheCounter, g_resetCacheIncr);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
#endif // STUB_LOGGING
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\nsite data\r\n");
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
//output counters
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "site_counter", g_site_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "site_write", g_site_write);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "site_write_mono", g_site_write_mono);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "site_write_poly", g_site_write_poly);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\n%-30s %d\r\n", "reclaim_counter", g_reclaim_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\nstub data\r\n");
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "stub_lookup_counter", g_stub_lookup_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "stub_mono_counter", g_stub_mono_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "stub_poly_counter", g_stub_poly_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "stub_vtable_counter", g_stub_vtable_counter);
WriteFile(g_hStubLogFile, szPrintStr, (DWORD)strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "stub_space", g_stub_space);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
#ifdef STUB_LOGGING
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\nlookup stub data\r\n");
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
UINT32 total_calls = g_mono_call_counter + g_poly_call_counter;
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "lookup_call_counter", g_call_lookup_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\n%-30s %d\r\n", "total stub dispatch calls", total_calls);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\n%-30s %#5.2f%%\r\n", "mono stub data",
100.0 * double(g_mono_call_counter)/double(total_calls));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "mono_call_counter", g_mono_call_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "mono_miss_counter", g_mono_miss_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_PCT, "miss percent",
100.0 * double(g_mono_miss_counter)/double(g_mono_call_counter));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\n%-30s %#5.2f%%\r\n", "poly stub data",
100.0 * double(g_poly_call_counter)/double(total_calls));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "poly_call_counter", g_poly_call_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "poly_miss_counter", g_poly_miss_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_PCT, "miss percent",
100.0 * double(g_poly_miss_counter)/double(g_poly_call_counter));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
#endif // STUB_LOGGING
#ifdef CHAIN_LOOKUP
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\nchain lookup data\r\n");
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
#ifdef STUB_LOGGING
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "chained_lookup_call_counter", g_chained_lookup_call_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "chained_lookup_miss_counter", g_chained_lookup_miss_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_PCT, "miss percent",
100.0 * double(g_chained_lookup_miss_counter)/double(g_chained_lookup_call_counter));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "chained_lookup_external_call_counter", g_chained_lookup_external_call_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "chained_lookup_external_miss_counter", g_chained_lookup_external_miss_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_PCT, "miss percent",
100.0 * double(g_chained_lookup_external_miss_counter)/double(g_chained_lookup_external_call_counter));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
#endif // STUB_LOGGING
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "chained_entry_promoted", g_chained_entry_promoted);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
#endif // CHAIN_LOOKUP
#ifdef STUB_LOGGING
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\n%-30s %#5.2f%%\r\n", "worker (slow resolver) data",
100.0 * double(g_worker_call)/double(total_calls));
#else // !STUB_LOGGING
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\nworker (slow resolver) data\r\n");
#endif // !STUB_LOGGING
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "worker_call", g_worker_call);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "worker_call_no_patch", g_worker_call_no_patch);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "external_call", g_external_call);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "external_call_no_patch", g_external_call_no_patch);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "worker_collide_to_mono", g_worker_collide_to_mono);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
UINT32 total_inserts = g_insert_cache_external
+ g_insert_cache_shared
+ g_insert_cache_dispatch
+ g_insert_cache_resolve;
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\n%-30s %d\r\n", "insert cache data", total_inserts);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT_PCT, "insert_cache_external", g_insert_cache_external,
100.0 * double(g_insert_cache_external)/double(total_inserts));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT_PCT, "insert_cache_shared", g_insert_cache_shared,
100.0 * double(g_insert_cache_shared)/double(total_inserts));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT_PCT, "insert_cache_dispatch", g_insert_cache_dispatch,
100.0 * double(g_insert_cache_dispatch)/double(total_inserts));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT_PCT, "insert_cache_resolve", g_insert_cache_resolve,
100.0 * double(g_insert_cache_resolve)/double(total_inserts));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT_PCT, "insert_cache_hit", g_insert_cache_hit,
100.0 * double(g_insert_cache_hit)/double(total_inserts));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT_PCT, "insert_cache_miss", g_insert_cache_miss,
100.0 * double(g_insert_cache_miss)/double(total_inserts));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT_PCT, "insert_cache_collide", g_insert_cache_collide,
100.0 * double(g_insert_cache_collide)/double(total_inserts));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT_PCT, "insert_cache_write", g_insert_cache_write,
100.0 * double(g_insert_cache_write)/double(total_inserts));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\ncache data\r\n");
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
size_t total, used;
g_resolveCache->GetLoadFactor(&total, &used);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "cache_entry_used", used);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "cache_entry_counter", g_cache_entry_counter);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "cache_entry_space", g_cache_entry_space);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\nstub hash table data\r\n");
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "bucket_space", g_bucket_space);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), OUTPUT_FORMAT_INT, "bucket_space_dead", g_bucket_space_dead);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\ncache_load:\t%d used, %d total, utilization %#5.2f%%\r\n",
used, total, 100.0 * double(used) / double(total));
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
#ifdef STUB_LOGGING
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\ncache entry write counts\r\n");
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
DispatchCache::CacheEntryData *rgCacheData = g_resolveCache->cacheData;
for (UINT16 i = 0; i < CALL_STUB_CACHE_SIZE; i++)
{
sprintf_s(szPrintStr, COUNTOF(szPrintStr), " %4d", rgCacheData[i]);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
if (i % 16 == 15)
{
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\n");
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
}
}
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "\r\n");
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
#endif // STUB_LOGGING
#if 0
for (unsigned i = 0; i < ContractImplMap::max_delta_count; i++)
{
if (ContractImplMap::deltasDescs[i] != 0)
{
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "deltasDescs[%d]\t%d\r\n", i, ContractImplMap::deltasDescs[i]);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
}
}
for (unsigned i = 0; i < ContractImplMap::max_delta_count; i++)
{
if (ContractImplMap::deltasSlots[i] != 0)
{
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "deltasSlots[%d]\t%d\r\n", i, ContractImplMap::deltasSlots[i]);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
}
}
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "cout of maps:\t%d\r\n", ContractImplMap::countMaps);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "count of interfaces:\t%d\r\n", ContractImplMap::countInterfaces);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "count of deltas:\t%d\r\n", ContractImplMap::countDelta);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "total delta for descs:\t%d\r\n", ContractImplMap::totalDeltaDescs);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
sprintf_s(szPrintStr, COUNTOF(szPrintStr), "total delta for slots:\t%d\r\n", ContractImplMap::totalDeltaSlots);
WriteFile (g_hStubLogFile, szPrintStr, (DWORD) strlen(szPrintStr), &dwWriteByte, NULL);
#endif // 0
}
}
void VirtualCallStubManager::FinishLogging()
{
LoggingDump();
if(g_hStubLogFile)
{
CloseHandle(g_hStubLogFile);
}
g_hStubLogFile = NULL;
}
void VirtualCallStubManager::ResetCache()
{
CONTRACTL
{
NOTHROW;
GC_TRIGGERS;
FORBID_FAULT;
}
CONTRACTL_END
g_resolveCache->LogStats();
g_insert_cache_external = 0;
g_insert_cache_shared = 0;
g_insert_cache_dispatch = 0;
g_insert_cache_resolve = 0;
g_insert_cache_hit = 0;
g_insert_cache_miss = 0;
g_insert_cache_collide = 0;
g_insert_cache_write = 0;
// Go through each cache entry and if the cache element there is in
// the cache entry heap of the manager being deleted, then we just
// set the cache entry to empty.
DispatchCache::Iterator it(g_resolveCache);
while (it.IsValid())
{
it.UnlinkEntry();
}
}
void VirtualCallStubManager::Init(BaseDomain *pDomain, LoaderAllocator *pLoaderAllocator)
{
CONTRACTL {
THROWS;
GC_TRIGGERS;
PRECONDITION(CheckPointer(pDomain));
INJECT_FAULT(COMPlusThrowOM(););
} CONTRACTL_END;
// Record the parent domain
parentDomain = pDomain;
m_loaderAllocator = pLoaderAllocator;
//
// Init critical sections
//
m_indCellLock.Init(CrstVSDIndirectionCellLock, CRST_UNSAFE_ANYMODE);
//
// Now allocate all BucketTables
//
NewHolder<BucketTable> resolvers_holder(new BucketTable(CALL_STUB_MIN_BUCKETS));
NewHolder<BucketTable> dispatchers_holder(new BucketTable(CALL_STUB_MIN_BUCKETS*2));
NewHolder<BucketTable> lookups_holder(new BucketTable(CALL_STUB_MIN_BUCKETS));
NewHolder<BucketTable> vtableCallers_holder(new BucketTable(CALL_STUB_MIN_BUCKETS));
NewHolder<BucketTable> cache_entries_holder(new BucketTable(CALL_STUB_MIN_BUCKETS));
//
// Now allocate our LoaderHeaps
//
//
// First do some calculation to determine how many pages that we
// will need to commit and reserve for each out our loader heaps
//
DWORD indcell_heap_reserve_size;
DWORD indcell_heap_commit_size;
DWORD cache_entry_heap_reserve_size;
DWORD cache_entry_heap_commit_size;
DWORD lookup_heap_reserve_size;
DWORD lookup_heap_commit_size;
DWORD dispatch_heap_reserve_size;
DWORD dispatch_heap_commit_size;
DWORD resolve_heap_reserve_size;
DWORD resolve_heap_commit_size;
DWORD vtable_heap_reserve_size;
DWORD vtable_heap_commit_size;
//
// Setup an expected number of items to commit and reserve
//
// The commit number is not that important as we always commit at least one page worth of items
// The reserve number shoudl be high enough to cover a typical lare application,
// in order to minimize the fragmentation of our rangelists
//
if (parentDomain->IsDefaultDomain())
{
indcell_heap_commit_size = 16; indcell_heap_reserve_size = 2000;
cache_entry_heap_commit_size = 16; cache_entry_heap_reserve_size = 800;
lookup_heap_commit_size = 24; lookup_heap_reserve_size = 250;
dispatch_heap_commit_size = 24; dispatch_heap_reserve_size = 600;
resolve_heap_commit_size = 24; resolve_heap_reserve_size = 300;
vtable_heap_commit_size = 24; vtable_heap_reserve_size = 600;
}
else if (parentDomain->IsSharedDomain())
{
indcell_heap_commit_size = 16; indcell_heap_reserve_size = 100;
#ifdef BIT64
indcell_heap_reserve_size = 2000;
#endif
cache_entry_heap_commit_size = 16; cache_entry_heap_reserve_size = 500;
lookup_heap_commit_size = 24; lookup_heap_reserve_size = 200;
dispatch_heap_commit_size = 24; dispatch_heap_reserve_size = 450;
resolve_heap_commit_size = 24; resolve_heap_reserve_size = 200;
vtable_heap_commit_size = 24; vtable_heap_reserve_size = 450;
}
else
{
indcell_heap_commit_size = 8; indcell_heap_reserve_size = 8;
cache_entry_heap_commit_size = 8; cache_entry_heap_reserve_size = 8;
lookup_heap_commit_size = 8; lookup_heap_reserve_size = 8;
dispatch_heap_commit_size = 8; dispatch_heap_reserve_size = 8;
resolve_heap_commit_size = 8; resolve_heap_reserve_size = 8;
vtable_heap_commit_size = 8; vtable_heap_reserve_size = 8;
}
#ifdef BIT64
// If we're on 64-bit, there's a ton of address space, so reserve more space to
// try to avoid getting into the situation where the resolve heap is more than
// a rel32 jump away from the dispatch heap, since this will cause us to produce
// larger dispatch stubs on AMD64.
dispatch_heap_reserve_size *= 10;
resolve_heap_reserve_size *= 10;
#endif
//
// Convert the number of items into a size in bytes to commit and reserve
//
indcell_heap_reserve_size *= sizeof(void *);
indcell_heap_commit_size *= sizeof(void *);
cache_entry_heap_reserve_size *= sizeof(ResolveCacheElem);
cache_entry_heap_commit_size *= sizeof(ResolveCacheElem);
lookup_heap_reserve_size *= sizeof(LookupHolder);
lookup_heap_commit_size *= sizeof(LookupHolder);
DWORD dispatchHolderSize = sizeof(DispatchHolder);
#ifdef _TARGET_AMD64_
dispatchHolderSize = static_cast<DWORD>(DispatchHolder::GetHolderSize(DispatchStub::e_TYPE_SHORT));
#endif
dispatch_heap_reserve_size *= dispatchHolderSize;
dispatch_heap_commit_size *= dispatchHolderSize;
resolve_heap_reserve_size *= sizeof(ResolveHolder);
resolve_heap_commit_size *= sizeof(ResolveHolder);
vtable_heap_reserve_size *= static_cast<DWORD>(VTableCallHolder::GetHolderSize(0));
vtable_heap_commit_size *= static_cast<DWORD>(VTableCallHolder::GetHolderSize(0));
//
// Align up all of the commit and reserve sizes
//
indcell_heap_reserve_size = (DWORD) ALIGN_UP(indcell_heap_reserve_size, GetOsPageSize());
indcell_heap_commit_size = (DWORD) ALIGN_UP(indcell_heap_commit_size, GetOsPageSize());
cache_entry_heap_reserve_size = (DWORD) ALIGN_UP(cache_entry_heap_reserve_size, GetOsPageSize());
cache_entry_heap_commit_size = (DWORD) ALIGN_UP(cache_entry_heap_commit_size, GetOsPageSize());
lookup_heap_reserve_size = (DWORD) ALIGN_UP(lookup_heap_reserve_size, GetOsPageSize());
lookup_heap_commit_size = (DWORD) ALIGN_UP(lookup_heap_commit_size, GetOsPageSize());
dispatch_heap_reserve_size = (DWORD) ALIGN_UP(dispatch_heap_reserve_size, GetOsPageSize());
dispatch_heap_commit_size = (DWORD) ALIGN_UP(dispatch_heap_commit_size, GetOsPageSize());
resolve_heap_reserve_size = (DWORD) ALIGN_UP(resolve_heap_reserve_size, GetOsPageSize());
resolve_heap_commit_size = (DWORD) ALIGN_UP(resolve_heap_commit_size, GetOsPageSize());
vtable_heap_reserve_size = (DWORD) ALIGN_UP(vtable_heap_reserve_size, GetOsPageSize());
vtable_heap_commit_size = (DWORD) ALIGN_UP(vtable_heap_commit_size, GetOsPageSize());
BYTE * initReservedMem = NULL;
if (!m_loaderAllocator->IsCollectible())
{
DWORD dwTotalReserveMemSizeCalc = indcell_heap_reserve_size +
cache_entry_heap_reserve_size +
lookup_heap_reserve_size +
dispatch_heap_reserve_size +
resolve_heap_reserve_size +
vtable_heap_reserve_size;
DWORD dwTotalReserveMemSize = (DWORD) ALIGN_UP(dwTotalReserveMemSizeCalc, VIRTUAL_ALLOC_RESERVE_GRANULARITY);
// If there's wasted reserved memory, we hand this out to the heaps to avoid waste.
{
DWORD dwWastedReserveMemSize = dwTotalReserveMemSize - dwTotalReserveMemSizeCalc;
if (dwWastedReserveMemSize != 0)
{
DWORD cWastedPages = dwWastedReserveMemSize / GetOsPageSize();
DWORD cPagesPerHeap = cWastedPages / 6;
DWORD cPagesRemainder = cWastedPages % 6; // We'll throw this at the resolve heap
indcell_heap_reserve_size += cPagesPerHeap * GetOsPageSize();
cache_entry_heap_reserve_size += cPagesPerHeap * GetOsPageSize();
lookup_heap_reserve_size += cPagesPerHeap * GetOsPageSize();
dispatch_heap_reserve_size += cPagesPerHeap * GetOsPageSize();
vtable_heap_reserve_size += cPagesPerHeap * GetOsPageSize();
resolve_heap_reserve_size += cPagesPerHeap * GetOsPageSize();
resolve_heap_reserve_size += cPagesRemainder * GetOsPageSize();
}
CONSISTENCY_CHECK((indcell_heap_reserve_size +
cache_entry_heap_reserve_size +
lookup_heap_reserve_size +
dispatch_heap_reserve_size +
resolve_heap_reserve_size +
vtable_heap_reserve_size) ==
dwTotalReserveMemSize);
}
initReservedMem = ClrVirtualAllocExecutable (dwTotalReserveMemSize, MEM_RESERVE, PAGE_NOACCESS);
m_initialReservedMemForHeaps = (BYTE *) initReservedMem;
if (initReservedMem == NULL)
COMPlusThrowOM();
}
else
{
indcell_heap_reserve_size = GetOsPageSize();
indcell_heap_commit_size = GetOsPageSize();
cache_entry_heap_reserve_size = GetOsPageSize();
cache_entry_heap_commit_size = GetOsPageSize();
lookup_heap_reserve_size = GetOsPageSize();
lookup_heap_commit_size = GetOsPageSize();
dispatch_heap_reserve_size = GetOsPageSize();
dispatch_heap_commit_size = GetOsPageSize();
resolve_heap_reserve_size = GetOsPageSize();
resolve_heap_commit_size = GetOsPageSize();
// Heap for the collectible case is carefully tuned to sum up to 16 pages. Today, we only use the
// vtable jump stubs in the R2R scenario, which is unlikely to be loaded in the collectible context,
// so we'll keep the heap numbers at zero for now. If we ever use vtable stubs in the collectible
// scenario, we'll just allocate the memory on demand.
vtable_heap_reserve_size = 0;
vtable_heap_commit_size = 0;
#ifdef _DEBUG
DWORD dwTotalReserveMemSizeCalc = indcell_heap_reserve_size +
cache_entry_heap_reserve_size +
lookup_heap_reserve_size +
dispatch_heap_reserve_size +
resolve_heap_reserve_size +
vtable_heap_reserve_size;
#endif
DWORD dwActualVSDSize = 0;
initReservedMem = pLoaderAllocator->GetVSDHeapInitialBlock(&dwActualVSDSize);
_ASSERTE(dwActualVSDSize == dwTotalReserveMemSizeCalc);
m_initialReservedMemForHeaps = (BYTE *) initReservedMem;
if (initReservedMem == NULL)
COMPlusThrowOM();
}
// Hot memory, Writable, No-Execute, infrequent writes
NewHolder<LoaderHeap> indcell_heap_holder(
new LoaderHeap(indcell_heap_reserve_size, indcell_heap_commit_size,
initReservedMem, indcell_heap_reserve_size,
NULL, NULL, FALSE));
initReservedMem += indcell_heap_reserve_size;
// Hot memory, Writable, No-Execute, infrequent writes
NewHolder<LoaderHeap> cache_entry_heap_holder(
new LoaderHeap(cache_entry_heap_reserve_size, cache_entry_heap_commit_size,
initReservedMem, cache_entry_heap_reserve_size,
NULL,
&cache_entry_rangeList, FALSE));
initReservedMem += cache_entry_heap_reserve_size;
// Warm memory, Writable, Execute, write exactly once
NewHolder<LoaderHeap> lookup_heap_holder(
new LoaderHeap(lookup_heap_reserve_size, lookup_heap_commit_size,
initReservedMem, lookup_heap_reserve_size,
NULL,
&lookup_rangeList, TRUE));
initReservedMem += lookup_heap_reserve_size;
// Hot memory, Writable, Execute, write exactly once
NewHolder<LoaderHeap> dispatch_heap_holder(
new LoaderHeap(dispatch_heap_reserve_size, dispatch_heap_commit_size,
initReservedMem, dispatch_heap_reserve_size,
NULL,
&dispatch_rangeList, TRUE));
initReservedMem += dispatch_heap_reserve_size;
// Hot memory, Writable, Execute, write exactly once
NewHolder<LoaderHeap> resolve_heap_holder(
new LoaderHeap(resolve_heap_reserve_size, resolve_heap_commit_size,
initReservedMem, resolve_heap_reserve_size,
NULL,
&resolve_rangeList, TRUE));
initReservedMem += resolve_heap_reserve_size;
// Hot memory, Writable, Execute, write exactly once
NewHolder<LoaderHeap> vtable_heap_holder(
new LoaderHeap(vtable_heap_reserve_size, vtable_heap_commit_size,
initReservedMem, vtable_heap_reserve_size,
NULL,
&vtable_rangeList, TRUE));
initReservedMem += vtable_heap_reserve_size;
// Allocate the initial counter block
NewHolder<counter_block> m_counters_holder(new counter_block);
//
// On success of every allocation, assign the objects and suppress the release
//
indcell_heap = indcell_heap_holder; indcell_heap_holder.SuppressRelease();
lookup_heap = lookup_heap_holder; lookup_heap_holder.SuppressRelease();
dispatch_heap = dispatch_heap_holder; dispatch_heap_holder.SuppressRelease();
resolve_heap = resolve_heap_holder; resolve_heap_holder.SuppressRelease();
vtable_heap = vtable_heap_holder; vtable_heap_holder.SuppressRelease();
cache_entry_heap = cache_entry_heap_holder; cache_entry_heap_holder.SuppressRelease();
resolvers = resolvers_holder; resolvers_holder.SuppressRelease();
dispatchers = dispatchers_holder; dispatchers_holder.SuppressRelease();
lookups = lookups_holder; lookups_holder.SuppressRelease();
vtableCallers = vtableCallers_holder; vtableCallers_holder.SuppressRelease();
cache_entries = cache_entries_holder; cache_entries_holder.SuppressRelease();
m_counters = m_counters_holder; m_counters_holder.SuppressRelease();
// Create the initial failure counter block
m_counters->next = NULL;
m_counters->used = 0;
m_cur_counter_block = m_counters;
m_cur_counter_block_for_reclaim = m_counters;
m_cur_counter_block_for_reclaim_index = 0;
// Keep track of all of our managers
VirtualCallStubManagerManager::GlobalManager()->AddStubManager(this);
}
void VirtualCallStubManager::Uninit()
{
WRAPPER_NO_CONTRACT;
if (m_loaderAllocator->IsCollectible())
{
parentDomain->GetCollectibleVSDRanges()->RemoveRanges(this);
}
// Keep track of all our managers
VirtualCallStubManagerManager::GlobalManager()->RemoveStubManager(this);
}
VirtualCallStubManager::~VirtualCallStubManager()
{
CONTRACTL {
NOTHROW;
GC_NOTRIGGER;
FORBID_FAULT;
} CONTRACTL_END;
LogStats();
// Go through each cache entry and if the cache element there is in
// the cache entry heap of the manager being deleted, then we just
// set the cache entry to empty.
DispatchCache::Iterator it(g_resolveCache);
while (it.IsValid())
{
// Using UnlinkEntry performs an implicit call to Next (see comment for UnlinkEntry).
// Thus, we need to avoid calling Next when we delete an entry so
// that we don't accidentally skip entries.
while (it.IsValid() && cache_entry_rangeList.IsInRange((TADDR)it.Entry()))
{
it.UnlinkEntry();
}
it.Next();
}
if (indcell_heap) { delete indcell_heap; indcell_heap = NULL;}
if (lookup_heap) { delete lookup_heap; lookup_heap = NULL;}
if (dispatch_heap) { delete dispatch_heap; dispatch_heap = NULL;}
if (resolve_heap) { delete resolve_heap; resolve_heap = NULL;}
if (vtable_heap) { delete vtable_heap; vtable_heap = NULL;}
if (cache_entry_heap) { delete cache_entry_heap; cache_entry_heap = NULL;}
if (resolvers) { delete resolvers; resolvers = NULL;}
if (dispatchers) { delete dispatchers; dispatchers = NULL;}
if (lookups) { delete lookups; lookups = NULL;}
if (vtableCallers) { delete vtableCallers; vtableCallers = NULL;}
if (cache_entries) { delete cache_entries; cache_entries = NULL;}
// Now get rid of the memory taken by the counter_blocks
while (m_counters != NULL)
{
counter_block *del = m_counters;
m_counters = m_counters->next;
delete del;
}
// This was the block reserved by Init for the heaps.
// For the collectible case, the VSD logic does not allocate the memory.
if (m_initialReservedMemForHeaps && !m_loaderAllocator->IsCollectible())
ClrVirtualFree (m_initialReservedMemForHeaps, 0, MEM_RELEASE);
// Free critical section
m_indCellLock.Destroy();
}
// Initialize static structures, and start up logging if necessary
void VirtualCallStubManager::InitStatic()
{
STANDARD_VM_CONTRACT;
#ifdef STUB_LOGGING
// Note if you change these values using environment variables then you must use hex values :-(
STUB_MISS_COUNT_VALUE = (INT32) CLRConfig::GetConfigValue(CLRConfig::INTERNAL_VirtualCallStubMissCount);
STUB_COLLIDE_WRITE_PCT = (INT32) CLRConfig::GetConfigValue(CLRConfig::INTERNAL_VirtualCallStubCollideWritePct);
STUB_COLLIDE_MONO_PCT = (INT32) CLRConfig::GetConfigValue(CLRConfig::INTERNAL_VirtualCallStubCollideMonoPct);
g_dumpLogCounter = (INT32) CLRConfig::GetConfigValue(CLRConfig::INTERNAL_VirtualCallStubDumpLogCounter);
g_dumpLogIncr = (INT32) CLRConfig::GetConfigValue(CLRConfig::INTERNAL_VirtualCallStubDumpLogIncr);
g_resetCacheCounter = (INT32) CLRConfig::GetConfigValue(CLRConfig::INTERNAL_VirtualCallStubResetCacheCounter);
g_resetCacheIncr = (INT32) CLRConfig::GetConfigValue(CLRConfig::INTERNAL_VirtualCallStubResetCacheIncr);
#endif // STUB_LOGGING
#ifndef STUB_DISPATCH_PORTABLE
DispatchHolder::InitializeStatic();
ResolveHolder::InitializeStatic();
#endif // !STUB_DISPATCH_PORTABLE
LookupHolder::InitializeStatic();
g_resolveCache = new DispatchCache();
if(CLRConfig::GetConfigValue(CLRConfig::EXTERNAL_VirtualCallStubLogging))
StartupLogging();
VirtualCallStubManagerManager::InitStatic();
}
// Static shutdown code.
// At the moment, this doesn't do anything more than log statistics.
void VirtualCallStubManager::UninitStatic()
{
CONTRACTL
{
NOTHROW;
GC_TRIGGERS;
FORBID_FAULT;
}
CONTRACTL_END
if (g_hStubLogFile != NULL)
{
VirtualCallStubManagerIterator it =
VirtualCallStubManagerManager::GlobalManager()->IterateVirtualCallStubManagers();
while (it.Next())
{
it.Current()->LogStats();
}
g_resolveCache->LogStats();
FinishLogging();
}
}
/* reclaim/rearrange any structures that can only be done during a gc sync point
i.e. need to be serialized and non-concurrant. */
void VirtualCallStubManager::ReclaimAll()
{
STATIC_CONTRACT_NOTHROW;
STATIC_CONTRACT_GC_NOTRIGGER;
STATIC_CONTRACT_FORBID_FAULT;
/* @todo: if/when app domain unloading is supported,
and when we have app domain specific stub heaps, we can complete the unloading
of an app domain stub heap at this point, and make any patches to existing stubs that are
not being unload so that they nolonger refer to any of the unloaded app domains code or types
*/
//reclaim space of abandoned buckets
BucketTable::Reclaim();
VirtualCallStubManagerIterator it =
VirtualCallStubManagerManager::GlobalManager()->IterateVirtualCallStubManagers();
while (it.Next())
{
it.Current()->Reclaim();
}
g_reclaim_counter++;
}
/* reclaim/rearrange any structures that can only be done during a gc sync point
i.e. need to be serialized and non-concurrant. */
void VirtualCallStubManager::Reclaim()
{
LIMITED_METHOD_CONTRACT;
UINT32 limit = min(counter_block::MAX_COUNTER_ENTRIES,
m_cur_counter_block_for_reclaim->used);
limit = min(m_cur_counter_block_for_reclaim_index + 16, limit);
for (UINT32 i = m_cur_counter_block_for_reclaim_index; i < limit; i++)
{
m_cur_counter_block_for_reclaim->block[i] += (STUB_MISS_COUNT_VALUE/10)+1;
}
// Increment the index by the number we processed
m_cur_counter_block_for_reclaim_index = limit;
// If we ran to the end of the block, go to the next
if (m_cur_counter_block_for_reclaim_index == m_cur_counter_block->used)
{
m_cur_counter_block_for_reclaim = m_cur_counter_block_for_reclaim->next;
m_cur_counter_block_for_reclaim_index = 0;
// If this was the last block in the chain, go back to the beginning
if (m_cur_counter_block_for_reclaim == NULL)
m_cur_counter_block_for_reclaim = m_counters;
}
}
#endif // !DACCESS_COMPILE
//----------------------------------------------------------------------------
/* static */
VirtualCallStubManager *VirtualCallStubManager::FindStubManager(PCODE stubAddress, StubKind* wbStubKind, BOOL usePredictStubKind)
{
CONTRACTL {
NOTHROW;
GC_NOTRIGGER;
FORBID_FAULT;
} CONTRACTL_END