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init.c
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init.c
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/*
init.c
system initialization and global state
*/
#include "platform.h"
#include <stdlib.h>
#include <string.h>
#include <setjmp.h>
#include <assert.h>
#if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/resource.h>
#include <sys/mman.h>
#include <unistd.h>
#endif
#include <errno.h>
#include <signal.h>
#if !defined(_OS_WINDOWS_) || defined(_COMPILER_MINGW_)
#include <getopt.h>
#endif
#include "julia.h"
#include "julia_internal.h"
#include <stdio.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _OS_WINDOWS_
#define WIN32_LEAN_AND_MEAN
// Copied from MINGW_FLOAT_H which may not be found due to a collision with the builtin gcc float.h
// eventually we can probably integrate this into OpenLibm.
#if defined(_COMPILER_MINGW_)
void __cdecl __MINGW_NOTHROW _fpreset (void);
void __cdecl __MINGW_NOTHROW fpreset (void);
#else
void __cdecl _fpreset (void);
void __cdecl fpreset (void);
#endif
#define _FPE_INVALID 0x81
#define _FPE_DENORMAL 0x82
#define _FPE_ZERODIVIDE 0x83
#define _FPE_OVERFLOW 0x84
#define _FPE_UNDERFLOW 0x85
#define _FPE_INEXACT 0x86
#define _FPE_UNEMULATED 0x87
#define _FPE_SQRTNEG 0x88
#define _FPE_STACKOVERFLOW 0x8a
#define _FPE_STACKUNDERFLOW 0x8b
#define _FPE_EXPLICITGEN 0x8c /* raise( SIGFPE ); */
#include <windows.h>
#include <dbghelp.h>
extern int needsSymRefreshModuleList;
extern BOOL (WINAPI *hSymRefreshModuleList)(HANDLE);
#endif
#if defined(__linux__)
//#define _GNU_SOURCE
#include <sched.h> // for setting CPU affinity
#endif
char *julia_home = NULL;
jl_compileropts_t jl_compileropts = { NULL, // build_path
0, // code_coverage
JL_COMPILEROPT_CHECK_BOUNDS_DEFAULT,
0 // int32_literals
};
int jl_boot_file_loaded = 0;
int exit_on_sigint = 0;
char *jl_stack_lo;
char *jl_stack_hi;
size_t jl_page_size;
static void jl_find_stack_bottom(void)
{
size_t stack_size;
#if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
struct rlimit rl;
getrlimit(RLIMIT_STACK, &rl);
stack_size = rl.rlim_cur;
#else
stack_size = 262144; // guess
#endif
jl_stack_hi = (char*)&stack_size;
jl_stack_lo = jl_stack_hi - stack_size;
}
#ifdef _OS_WINDOWS_
void __cdecl fpe_handler(int arg, int num)
{
(void)arg;
fpreset();
signal(SIGFPE, (void (__cdecl *)(int))fpe_handler);
switch(num) {
case _FPE_INVALID:
case _FPE_OVERFLOW:
case _FPE_UNDERFLOW:
default:
jl_errorf("Unexpected FPE Error 0x%X", num);
break;
case _FPE_ZERODIVIDE:
jl_throw(jl_diverror_exception);
break;
}
}
#else
void fpe_handler(int arg)
{
(void)arg;
sigset_t sset;
sigemptyset(&sset);
sigaddset(&sset, SIGFPE);
sigprocmask(SIG_UNBLOCK, &sset, NULL);
jl_throw(jl_diverror_exception);
}
#endif
static int is_addr_on_stack(void *addr)
{
#ifdef COPY_STACKS
return ((char*)addr > (char*)jl_stack_lo-3000000 &&
(char*)addr < (char*)jl_stack_hi);
#else
return ((char*)addr > (char*)jl_current_task->stack-8192 &&
(char*)addr < (char*)jl_current_task->stack+jl_current_task->ssize);
#endif
}
#if defined(__linux__) || defined(__FreeBSD__)
extern int in_jl_;
void segv_handler(int sig, siginfo_t *info, void *context)
{
sigset_t sset;
if (in_jl_ || is_addr_on_stack(info->si_addr)) {
sigemptyset(&sset);
sigaddset(&sset, SIGSEGV);
sigprocmask(SIG_UNBLOCK, &sset, NULL);
jl_throw(jl_stackovf_exception);
}
else {
uv_tty_reset_mode();
sigfillset(&sset);
sigprocmask(SIG_UNBLOCK, &sset, NULL);
signal(sig, SIG_DFL);
if (sig != SIGSEGV &&
sig != SIGBUS &&
sig != SIGILL)
raise(sig);
}
}
#endif
volatile sig_atomic_t jl_signal_pending = 0;
volatile sig_atomic_t jl_defer_signal = 0;
#ifdef _OS_WINDOWS_
void restore_signals(void)
{
SetConsoleCtrlHandler(NULL, 0); //turn on ctrl-c handler
}
void jl_throw_in_ctx(jl_value_t *excpt, CONTEXT *ctxThread, int bt)
{
assert(excpt != NULL);
bt_size = bt ? rec_backtrace_ctx(bt_data, MAX_BT_SIZE, ctxThread) : 0;
jl_exception_in_transit = excpt;
#if defined(_CPU_X86_64_)
ctxThread->Rip = (DWORD64)&jl_rethrow;
ctxThread->Rsp &= (DWORD64)-16;
ctxThread->Rsp -= 8; //fix up the stack pointer -- this seems to be correct by observation
#elif defined(_CPU_X86_)
ctxThread->Eip = (DWORD)&jl_rethrow;
ctxThread->Esp &= (DWORD)-16;
ctxThread->Esp -= 4; //fix up the stack pointer
#else
#error WIN16 not supported :P
#endif
}
volatile HANDLE hMainThread = NULL;
DLLEXPORT void jlbacktrace();
DLLEXPORT void gdblookup(ptrint_t ip);
static BOOL WINAPI sigint_handler(DWORD wsig) //This needs winapi types to guarantee __stdcall
{
if (exit_on_sigint) jl_exit(0);
int sig;
//windows signals use different numbers from unix
switch(wsig) {
case CTRL_C_EVENT: sig = SIGINT; break;
//case CTRL_BREAK_EVENT: sig = SIGTERM; break;
// etc.
default: sig = SIGTERM; break;
}
if (jl_defer_signal) {
jl_signal_pending = sig;
}
else {
jl_signal_pending = 0;
if ((DWORD)-1 == SuspendThread(hMainThread)) {
//error
fputs("error: SuspendThread failed\n",stderr);
return 0;
}
CONTEXT ctxThread;
memset(&ctxThread,0,sizeof(CONTEXT));
ctxThread.ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER;
if (!GetThreadContext(hMainThread, &ctxThread)) {
//error
fputs("error: GetThreadContext failed\n",stderr);
return 0;
}
jl_throw_in_ctx(jl_interrupt_exception, &ctxThread, 1);
ctxThread.ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER;
if (!SetThreadContext(hMainThread,&ctxThread)) {
fputs("error: SetThreadContext failed\n",stderr);
//error
return 0;
}
if ((DWORD)-1 == ResumeThread(hMainThread)) {
fputs("error: ResumeThread failed\n",stderr);
//error
return 0;
}
}
return 1;
}
static LONG WINAPI _exception_handler(struct _EXCEPTION_POINTERS *ExceptionInfo, int in_ctx)
{
if (ExceptionInfo->ExceptionRecord->ExceptionFlags == 0) {
switch (ExceptionInfo->ExceptionRecord->ExceptionCode) {
case EXCEPTION_INT_DIVIDE_BY_ZERO:
fpreset();
jl_throw_in_ctx(jl_diverror_exception, ExceptionInfo->ContextRecord,in_ctx);
return EXCEPTION_CONTINUE_EXECUTION;
case EXCEPTION_STACK_OVERFLOW:
bt_size = 0;
jl_throw_in_ctx(jl_stackovf_exception, ExceptionInfo->ContextRecord,0);
return EXCEPTION_CONTINUE_EXECUTION;
}
ios_puts("Please submit a bug report with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.\nException: ", ios_stderr);
switch (ExceptionInfo->ExceptionRecord->ExceptionCode) {
case EXCEPTION_ACCESS_VIOLATION:
ios_puts("EXCEPTION_ACCESS_VIOLATION", ios_stderr); break;
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
ios_puts("EXCEPTION_ARRAY_BOUNDS_EXCEEDED", ios_stderr); break;
case EXCEPTION_BREAKPOINT:
ios_puts("EXCEPTION_BREAKPOINT", ios_stderr); break;
case EXCEPTION_DATATYPE_MISALIGNMENT:
ios_puts("EXCEPTION_DATATYPE_MISALIGNMENT", ios_stderr); break;
case EXCEPTION_FLT_DENORMAL_OPERAND:
ios_puts("EXCEPTION_FLT_DENORMAL_OPERAND", ios_stderr); break;
case EXCEPTION_FLT_DIVIDE_BY_ZERO:
ios_puts("EXCEPTION_FLT_DIVIDE_BY_ZERO", ios_stderr); break;
case EXCEPTION_FLT_INEXACT_RESULT:
ios_puts("EXCEPTION_FLT_INEXACT_RESULT", ios_stderr); break;
case EXCEPTION_FLT_INVALID_OPERATION:
ios_puts("EXCEPTION_FLT_INVALID_OPERATION", ios_stderr); break;
case EXCEPTION_FLT_OVERFLOW:
ios_puts("EXCEPTION_FLT_OVERFLOW", ios_stderr); break;
case EXCEPTION_FLT_STACK_CHECK:
ios_puts("EXCEPTION_FLT_STACK_CHECK", ios_stderr); break;
case EXCEPTION_FLT_UNDERFLOW:
ios_puts("EXCEPTION_FLT_UNDERFLOW", ios_stderr); break;
case EXCEPTION_ILLEGAL_INSTRUCTION:
ios_puts("EXCEPTION_ILLEGAL_INSTRUCTION", ios_stderr); break;
case EXCEPTION_IN_PAGE_ERROR:
ios_puts("EXCEPTION_IN_PAGE_ERROR", ios_stderr); break;
case EXCEPTION_INT_DIVIDE_BY_ZERO:
ios_puts("EXCEPTION_INT_DIVIDE_BY_ZERO", ios_stderr); break;
case EXCEPTION_INT_OVERFLOW:
ios_puts("EXCEPTION_INT_OVERFLOW", ios_stderr); break;
case EXCEPTION_INVALID_DISPOSITION:
ios_puts("EXCEPTION_INVALID_DISPOSITION", ios_stderr); break;
case EXCEPTION_NONCONTINUABLE_EXCEPTION:
ios_puts("EXCEPTION_NONCONTINUABLE_EXCEPTION", ios_stderr); break;
case EXCEPTION_PRIV_INSTRUCTION:
ios_puts("EXCEPTION_PRIV_INSTRUCTION", ios_stderr); break;
case EXCEPTION_SINGLE_STEP:
ios_puts("EXCEPTION_SINGLE_STEP", ios_stderr); break;
case EXCEPTION_STACK_OVERFLOW:
ios_puts("EXCEPTION_STACK_OVERFLOW", ios_stderr); break;
default:
ios_puts("UNKNOWN", ios_stderr); break;
}
ios_printf(ios_stderr," at 0x%Ix -- ", (size_t)ExceptionInfo->ExceptionRecord->ExceptionAddress);
gdblookup((ptrint_t)ExceptionInfo->ExceptionRecord->ExceptionAddress);
bt_size = rec_backtrace_ctx(bt_data, MAX_BT_SIZE, ExceptionInfo->ContextRecord);
jlbacktrace();
}
return EXCEPTION_CONTINUE_SEARCH;
}
static LONG WINAPI exception_handler(struct _EXCEPTION_POINTERS *ExceptionInfo)
{
return _exception_handler(ExceptionInfo,1);
}
#if defined(_CPU_X86_64_)
EXCEPTION_DISPOSITION _seh_exception_handler(PEXCEPTION_RECORD ExceptionRecord, void *EstablisherFrame, PCONTEXT ContextRecord, void *DispatcherContext)
{
EXCEPTION_POINTERS ExceptionInfo;
ExceptionInfo.ExceptionRecord = ExceptionRecord;
ExceptionInfo.ContextRecord = ContextRecord;
EXCEPTION_DISPOSITION rval;
switch (_exception_handler(&ExceptionInfo,1)) {
case EXCEPTION_CONTINUE_EXECUTION:
rval = ExceptionContinueExecution; break;
case EXCEPTION_CONTINUE_SEARCH:
rval = ExceptionContinueSearch; break;
#ifndef _MSC_VER
case EXCEPTION_EXECUTE_HANDLER:
rval = ExceptionExecuteHandler; break;
#endif
}
return rval;
}
void* CALLBACK jl_getUnwindInfo(HANDLE hProcess, ULONG64 AddrBase, ULONG64 UserContext);
#endif
#else // #ifdef _OS_WINDOWS_
void restore_signals(void)
{
sigset_t sset;
sigemptyset(&sset);
sigprocmask(SIG_SETMASK, &sset, 0);
}
void sigint_handler(int sig, siginfo_t *info, void *context)
{
if (exit_on_sigint) jl_exit(0);
if (jl_defer_signal) {
jl_signal_pending = sig;
}
else {
jl_signal_pending = 0;
sigset_t sset;
sigemptyset(&sset);
sigaddset(&sset, SIGINT);
sigprocmask(SIG_UNBLOCK, &sset, NULL);
jl_throw(jl_interrupt_exception);
}
}
#endif
struct uv_shutdown_queue_item { uv_handle_t *h; struct uv_shutdown_queue_item *next; };
struct uv_shutdown_queue { struct uv_shutdown_queue_item *first; struct uv_shutdown_queue_item *last; };
static void jl_uv_exitcleanup_add(uv_handle_t* handle, struct uv_shutdown_queue *queue)
{
struct uv_shutdown_queue_item *item = (struct uv_shutdown_queue_item*)malloc(sizeof(struct uv_shutdown_queue_item));
item->h = handle;
item->next = NULL;
if (queue->last) queue->last->next = item;
if (!queue->first) queue->first = item;
queue->last = item;
}
static void jl_uv_exitcleanup_walk(uv_handle_t* handle, void *arg)
{
if (handle != (uv_handle_t*)jl_uv_stdout && handle != (uv_handle_t*)jl_uv_stderr)
jl_uv_exitcleanup_add(handle, (struct uv_shutdown_queue*)arg);
}
void jl_write_coverage_data(void);
DLLEXPORT void uv_atexit_hook()
{
#if defined(JL_GC_MARKSWEEP) && defined(GC_FINAL_STATS)
jl_print_gc_stats(JL_STDERR);
#endif
if (jl_compileropts.code_coverage)
jl_write_coverage_data();
if (jl_base_module) {
jl_value_t *f = jl_get_global(jl_base_module, jl_symbol("_atexit"));
if (f!=NULL && jl_is_function(f)) {
JL_TRY {
jl_apply((jl_function_t*)f, NULL, 0);
}
JL_CATCH {
JL_PRINTF(JL_STDERR, "\natexit hook threw an error: ");
jl_show(jl_stderr_obj(),jl_exception_in_transit);
}
}
}
jl_gc_run_all_finalizers();
uv_loop_t* loop = jl_global_event_loop();
struct uv_shutdown_queue queue = {NULL, NULL};
uv_walk(loop, jl_uv_exitcleanup_walk, &queue);
// close stdout and stderr last, since we like being
// able to show stuff (incl. printf's)
jl_uv_exitcleanup_add((uv_handle_t*)jl_uv_stdout, &queue);
jl_uv_exitcleanup_add((uv_handle_t*)jl_uv_stderr, &queue);
//uv_unref((uv_handle_t*)jl_uv_stdout);
//uv_unref((uv_handle_t*)jl_uv_stderr);
struct uv_shutdown_queue_item *item = queue.first;
while (item) {
JL_TRY {
while (item) {
uv_handle_t *handle = item->h;
if (handle->type != UV_FILE && uv_is_closing(handle)) {
item = item->next;
continue;
}
switch(handle->type) {
case UV_TTY:
case UV_UDP:
case UV_TCP:
case UV_NAMED_PIPE:
case UV_POLL:
case UV_TIMER:
case UV_ASYNC:
case UV_FS_EVENT:
case UV_FS_POLL:
case UV_IDLE:
case UV_PREPARE:
case UV_CHECK:
case UV_SIGNAL:
case UV_PROCESS:
case UV_FILE:
// These will be shutdown as appropriate by jl_close_uv
jl_close_uv(handle);
break;
case UV_HANDLE:
case UV_STREAM:
case UV_UNKNOWN_HANDLE:
case UV_HANDLE_TYPE_MAX:
case UV_RAW_FD:
case UV_RAW_HANDLE:
default:
assert(0);
}
item = item->next;
}
}
JL_CATCH {
//error handling -- continue cleanup, as much as possible
uv_unref(item->h);
jl_printf(JL_STDERR, "error during exit cleanup: close: ");
jl_static_show(JL_STDERR, jl_exception_in_transit);
item = item->next;
}
}
uv_run(loop,UV_RUN_DEFAULT); //let libuv spin until everything has finished closing
}
void jl_get_builtin_hooks(void);
uv_lib_t *jl_dl_handle;
uv_lib_t _jl_RTLD_DEFAULT_handle;
uv_lib_t *jl_RTLD_DEFAULT_handle=&_jl_RTLD_DEFAULT_handle;
#ifdef _OS_WINDOWS_
uv_lib_t _jl_ntdll_handle;
uv_lib_t _jl_exe_handle;
uv_lib_t _jl_kernel32_handle;
uv_lib_t _jl_crtdll_handle;
uv_lib_t _jl_winsock_handle;
uv_lib_t *jl_ntdll_handle=&_jl_ntdll_handle;
uv_lib_t *jl_exe_handle=&_jl_exe_handle;
uv_lib_t *jl_kernel32_handle=&_jl_kernel32_handle;
uv_lib_t *jl_crtdll_handle=&_jl_crtdll_handle;
uv_lib_t *jl_winsock_handle=&_jl_winsock_handle;
#endif
uv_loop_t *jl_io_loop;
void *init_stdio_handle(uv_file fd,int readable)
{
void *handle;
uv_handle_type type = uv_guess_handle(fd);
jl_uv_file_t *file;
#ifndef _OS_WINDOWS_
// Duplicate the file descriptor so we can later dup it over if we want to redirect
// STDIO without having to worry about closing the associated libuv object.
// On windows however, libuv objects remember streams by their HANDLE, so this is
// unnecessary.
fd = dup(fd);
#endif
//printf("%d: %d -- %d\n", fd, type, 0);
switch(type) {
case UV_TTY:
handle = malloc(sizeof(uv_tty_t));
if (uv_tty_init(jl_io_loop,(uv_tty_t*)handle,fd,readable)) {
jl_errorf("Error initializing stdio in uv_tty_init (%d, %d)\n", fd, type);
abort();
}
((uv_tty_t*)handle)->data=0;
uv_tty_set_mode((uv_tty_t*)handle,0); //cooked stdio
break;
case UV_FILE:
file = (jl_uv_file_t*)malloc(sizeof(jl_uv_file_t));
file->loop = jl_io_loop;
file->type = UV_FILE;
file->file = fd;
file->data = 0;
handle = file;
break;
case UV_NAMED_PIPE:
handle = malloc(sizeof(uv_pipe_t));
if (uv_pipe_init(jl_io_loop, (uv_pipe_t*)handle, (readable?UV_PIPE_READABLE:UV_PIPE_WRITABLE))) {
jl_errorf("Error initializing stdio in uv_pipe_init (%d, %d)\n", fd, type);
abort();
}
if (uv_pipe_open((uv_pipe_t*)handle,fd)) {
jl_errorf("Error initializing stdio in uv_pipe_open (%d, %d)\n", fd, type);
abort();
}
((uv_pipe_t*)handle)->data=0;
break;
case UV_TCP:
handle = malloc(sizeof(uv_tcp_t));
if (uv_tcp_init(jl_io_loop, (uv_tcp_t*)handle)) {
jl_errorf("Error initializing stdio in uv_tcp_init (%d, %d)\n", fd, type);
abort();
}
if (uv_tcp_open((uv_tcp_t*)handle,fd)) {
jl_errorf("Error initializing stdio in uv_tcp_open (%d, %d)\n", fd, type);
abort();
}
((uv_tcp_t*)handle)->data=0;
break;
case UV_UDP:
default:
jl_errorf("This type of handle for stdio is not yet supported (%d, %d)!\n", fd, type);
handle = NULL;
break;
}
return handle;
}
void init_stdio()
{ //order must be 2,1,0
JL_STDERR = (uv_stream_t*)init_stdio_handle(2,0);
JL_STDOUT = (uv_stream_t*)init_stdio_handle(1,0);
JL_STDIN = (uv_stream_t*)init_stdio_handle(0,1);
}
#ifdef JL_USE_INTEL_JITEVENTS
char jl_using_intel_jitevents; // Non-zero if running under Intel VTune Amplifier
#endif
#if defined(JL_USE_INTEL_JITEVENTS) && defined(__linux__)
unsigned sig_stack_size = SIGSTKSZ;
#else
#define sig_stack_size SIGSTKSZ
#endif
#ifndef _OS_WINDOWS_
static void *signal_stack;
#endif
#ifdef _OS_DARWIN_
#include <mach/mach_traps.h>
#include <mach/task.h>
#include <mach/mig_errors.h>
static mach_port_t segv_port = 0;
extern boolean_t exc_server(mach_msg_header_t *, mach_msg_header_t *);
void *mach_segv_listener(void *arg)
{
(void)arg;
while (1) {
int ret = mach_msg_server(exc_server,2048,segv_port,MACH_MSG_TIMEOUT_NONE);
printf("mach_msg_server: %s\n", mach_error_string(ret));
jl_exit(1);
}
}
void darwin_stack_overflow_handler(unw_context_t *uc)
{
bt_size = rec_backtrace_ctx(bt_data, MAX_BT_SIZE, uc);
jl_exception_in_transit = jl_stackovf_exception;
jl_rethrow();
}
#define HANDLE_MACH_ERROR(msg, retval) \
if (retval!=KERN_SUCCESS) { mach_error(msg ":", (retval)); jl_exit(1); }
#ifdef LIBOSXUNWIND
extern kern_return_t profiler_segv_handler(mach_port_t,mach_port_t,mach_port_t,exception_type_t,exception_data_t,mach_msg_type_number_t);
extern volatile mach_port_t mach_profiler_thread;
#endif
//exc_server uses dlsym to find symbol
DLLEXPORT
kern_return_t catch_exception_raise(mach_port_t exception_port,
mach_port_t thread,
mach_port_t task,
exception_type_t exception,
exception_data_t code,
mach_msg_type_number_t code_count)
{
unsigned int count = MACHINE_THREAD_STATE_COUNT;
unsigned int exc_count = X86_EXCEPTION_STATE64_COUNT;
x86_thread_state64_t state, old_state;
x86_exception_state64_t exc_state;
kern_return_t ret;
//memset(&state,0,sizeof(x86_thread_state64_t));
//memset(&exc_state,0,sizeof(x86_exception_state64_t));
#ifdef LIBOSXUNWIND
if (thread == mach_profiler_thread) {
return profiler_segv_handler(exception_port,thread,task,exception,code,code_count);
}
#endif
ret = thread_get_state(thread,x86_EXCEPTION_STATE64,(thread_state_t)&exc_state,&exc_count);
HANDLE_MACH_ERROR("thread_get_state(1)",ret);
uint64_t fault_addr = exc_state.__faultvaddr;
if (is_addr_on_stack((void*)fault_addr)) {
ret = thread_get_state(thread,x86_THREAD_STATE64,(thread_state_t)&state,&count);
HANDLE_MACH_ERROR("thread_get_state(2)",ret);
old_state = state;
// memset(&state,0,sizeof(x86_thread_state64_t));
// Setup libunwind information
state.__rsp = (uint64_t)signal_stack + sig_stack_size;
state.__rsp -= sizeof(unw_context_t);
state.__rsp &= -16;
unw_context_t *uc = (unw_context_t*)state.__rsp;
state.__rsp -= 512;
// This is for alignment. In particular note that the sizeof(void*) is necessary
// since it would usually specify the return address (i.e., we are aligning the call
// frame to a 16 byte boundary as required by the abi, but the stack pointer
// to point to the byte beyond that. Not doing this leads to funny behavior on
// the first access to an external function will fail due to stack misalignment
state.__rsp &= -16;
state.__rsp -= sizeof(void*);
memset(uc,0,sizeof(unw_context_t));
memcpy(uc,&old_state,sizeof(x86_thread_state64_t));
state.__rdi = (uint64_t)uc;
state.__rip = (uint64_t)darwin_stack_overflow_handler;
state.__rbp = state.__rsp;
ret = thread_set_state(thread,x86_THREAD_STATE64,(thread_state_t)&state,count);
HANDLE_MACH_ERROR("thread_set_state",ret);
return KERN_SUCCESS;
}
else {
return KERN_INVALID_ARGUMENT;
}
}
#endif
void julia_init(char *imageFile)
{
jl_io_loop = uv_default_loop(); // this loop will internal events (spawning process etc.),
// best to call this first, since it also initializes libuv
jl_page_size = jl_getpagesize();
jl_arr_xtralloc_limit = uv_get_total_memory() / 100; // Extra allocation limited to 1% of total RAM
jl_find_stack_bottom();
jl_dl_handle = jl_load_dynamic_library(NULL, JL_RTLD_DEFAULT);
#ifdef RTLD_DEFAULT
jl_RTLD_DEFAULT_handle->handle = RTLD_DEFAULT;
#else
jl_RTLD_DEFAULT_handle->handle = jl_dl_handle->handle;
#endif
#ifdef _OS_WINDOWS_
uv_dlopen("ntdll.dll", jl_ntdll_handle); // bypass julia's pathchecking for system dlls
uv_dlopen("kernel32.dll", jl_kernel32_handle);
uv_dlopen("msvcrt.dll", jl_crtdll_handle);
uv_dlopen("ws2_32.dll", jl_winsock_handle);
_jl_exe_handle.handle = GetModuleHandleA(NULL);
if (!DuplicateHandle(GetCurrentProcess(), GetCurrentThread(),
GetCurrentProcess(), (PHANDLE)&hMainThread, 0,
TRUE, DUPLICATE_SAME_ACCESS)) {
JL_PRINTF(JL_STDERR, "WARNING: failed to access handle to main thread\n");
}
SymSetOptions(SYMOPT_UNDNAME | SYMOPT_DEFERRED_LOADS | SYMOPT_LOAD_LINES);
if (!SymInitialize(GetCurrentProcess(), NULL, 1)) {
JL_PRINTF(JL_STDERR, "WARNING: failed to initalize stack walk info\n");
}
#if defined(_CPU_X86_64_)
if (!SymRegisterFunctionEntryCallback64(GetCurrentProcess(), jl_getUnwindInfo, 0)) JL_PRINTF(JL_STDERR, "WARNING: failed to install backtrace info callback\n");
#endif
needsSymRefreshModuleList = 0;
uv_lib_t jl_dbghelp;
uv_dlopen("dbghelp.dll",&jl_dbghelp);
if (uv_dlsym(&jl_dbghelp, "SymRefreshModuleList", (void**)&hSymRefreshModuleList))
hSymRefreshModuleList = 0;
#endif
init_stdio();
#if defined(JL_USE_INTEL_JITEVENTS)
const char* jit_profiling = getenv("ENABLE_JITPROFILING");
if (jit_profiling && atoi(jit_profiling)) {
jl_using_intel_jitevents = 1;
#if defined(__linux__)
// Intel VTune Amplifier needs at least 64k for alternate stack.
if (SIGSTKSZ < 1<<16)
sig_stack_size = 1<<16;
#endif
}
#endif
#if defined(__linux__)
int ncores = jl_cpu_cores();
if (ncores > 1) {
cpu_set_t cpumask;
CPU_ZERO(&cpumask);
for(int i=0; i < ncores; i++) {
CPU_SET(i, &cpumask);
}
sched_setaffinity(0, sizeof(cpu_set_t), &cpumask);
}
#endif
#ifdef JL_GC_MARKSWEEP
jl_gc_init();
jl_gc_disable();
#endif
jl_init_frontend();
jl_init_types();
jl_init_tasks(jl_stack_lo, jl_stack_hi-jl_stack_lo);
jl_init_codegen();
jl_an_empty_cell = (jl_value_t*)jl_alloc_cell_1d(0);
jl_init_serializer();
if (!imageFile) {
jl_core_module = jl_new_module(jl_symbol("Core"));
jl_new_main_module();
jl_internal_main_module = jl_main_module;
jl_current_module = jl_core_module;
jl_root_task->current_module = jl_current_module;
jl_init_intrinsic_functions();
jl_init_primitives();
jl_load("boot.jl");
jl_get_builtin_hooks();
jl_boot_file_loaded = 1;
jl_init_box_caches();
// Core.JULIA_HOME is a "magic" constant, we set it at runtime here
// since its value gets excluded from the system image
jl_set_const(jl_core_module, jl_symbol("JULIA_HOME"),
jl_cstr_to_string(julia_home));
jl_module_export(jl_core_module, jl_symbol("JULIA_HOME"));
}
if (imageFile) {
JL_TRY {
jl_restore_system_image(imageFile);
}
JL_CATCH {
JL_PRINTF(JL_STDERR, "error during init:\n");
jl_show(jl_stderr_obj(), jl_exception_in_transit);
JL_PRINTF(JL_STDERR, "\n");
jl_exit(1);
}
}
// set module field of primitive types
int i;
void **table = jl_core_module->bindings.table;
for(i=1; i < jl_core_module->bindings.size; i+=2) {
if (table[i] != HT_NOTFOUND) {
jl_binding_t *b = (jl_binding_t*)table[i];
if (b->value && jl_is_datatype(b->value)) {
jl_datatype_t *tt = (jl_datatype_t*)b->value;
tt->name->module = jl_core_module;
}
}
}
// the Main module is the one which is always open, and set as the
// current module for bare (non-module-wrapped) toplevel expressions.
// it does "using Base" if Base is available.
if (jl_base_module != NULL) {
jl_add_standard_imports(jl_main_module);
}
// eval() uses Main by default, so Main.eval === Core.eval
jl_module_import(jl_main_module, jl_core_module, jl_symbol("eval"));
jl_current_module = jl_main_module;
jl_root_task->current_module = jl_current_module;
#ifndef _OS_WINDOWS_
signal_stack = malloc(sig_stack_size);
struct sigaction actf;
memset(&actf, 0, sizeof(struct sigaction));
sigemptyset(&actf.sa_mask);
actf.sa_handler = fpe_handler;
actf.sa_flags = 0;
if (sigaction(SIGFPE, &actf, NULL) < 0) {
JL_PRINTF(JL_STDERR, "sigaction: %s\n", strerror(errno));
jl_exit(1);
}
if (signal(SIGPIPE,SIG_IGN) == SIG_ERR) {
JL_PRINTF(JL_STDERR, "Couldn't set SIGPIPE\n");
jl_exit(1);
}
#if defined (_OS_DARWIN_)
kern_return_t ret;
mach_port_t self = mach_task_self();
ret = mach_port_allocate(self,MACH_PORT_RIGHT_RECEIVE,&segv_port);
HANDLE_MACH_ERROR("mach_port_allocate",ret);
ret = mach_port_insert_right(self,segv_port,segv_port,MACH_MSG_TYPE_MAKE_SEND);
HANDLE_MACH_ERROR("mach_port_insert_right",ret);
// Alright, create a thread to serve as the listener for exceptions
pthread_t thread;
pthread_attr_t attr;
if (pthread_attr_init(&attr) != 0) {
JL_PRINTF(JL_STDERR, "pthread_attr_init failed");
jl_exit(1);
}
pthread_attr_setdetachstate(&attr,PTHREAD_CREATE_DETACHED);
if (pthread_create(&thread,&attr,mach_segv_listener,NULL) != 0) {
JL_PRINTF(JL_STDERR, "pthread_create failed");
jl_exit(1);
}
pthread_attr_destroy(&attr);
ret = task_set_exception_ports(self,EXC_MASK_BAD_ACCESS,segv_port,EXCEPTION_DEFAULT,MACHINE_THREAD_STATE);
HANDLE_MACH_ERROR("task_set_exception_ports",ret);
#else // defined(_OS_DARWIN_)
stack_t ss;
ss.ss_flags = 0;
ss.ss_size = sig_stack_size;
ss.ss_sp = signal_stack;
if (sigaltstack(&ss, NULL) < 0) {
JL_PRINTF(JL_STDERR, "sigaltstack: %s\n", strerror(errno));
jl_exit(1);
}
struct sigaction act;
memset(&act, 0, sizeof(struct sigaction));
sigemptyset(&act.sa_mask);
act.sa_sigaction = segv_handler;
act.sa_flags = SA_ONSTACK | SA_SIGINFO;
if (sigaction(SIGSEGV, &act, NULL) < 0) {
JL_PRINTF(JL_STDERR, "sigaction: %s\n", strerror(errno));
jl_exit(1);
}
#endif // defined(_OS_DARWIN_)
#else // defined(_OS_WINDOWS_)
if (signal(SIGFPE, (void (__cdecl *)(int))fpe_handler) == SIG_ERR) {
JL_PRINTF(JL_STDERR, "Couldn't set SIGFPE\n");
jl_exit(1);
}
#endif
#ifdef JL_GC_MARKSWEEP
jl_gc_enable();
#endif
if (imageFile)
jl_init_restored_modules();
jl_install_sigint_handler();
}
DLLEXPORT void jl_install_sigint_handler()
{
#ifdef _OS_WINDOWS_
SetConsoleCtrlHandler((PHANDLER_ROUTINE)sigint_handler,1);
#else
struct sigaction act;
memset(&act, 0, sizeof(struct sigaction));
sigemptyset(&act.sa_mask);
act.sa_sigaction = sigint_handler;
act.sa_flags = SA_SIGINFO;
if (sigaction(SIGINT, &act, NULL) < 0) {
JL_PRINTF(JL_STDERR, "sigaction: %s\n", strerror(errno));
jl_exit(1);
}
#endif
//printf("sigint installed\n");
}
extern int asprintf(char **str, const char *fmt, ...);
extern void * __stack_chk_guard;
DLLEXPORT int julia_trampoline(int argc, char **argv, int (*pmain)(int ac,char *av[]))
{
#if defined(_OS_WINDOWS_)
SetUnhandledExceptionFilter(exception_handler);
#endif
unsigned char *p = (unsigned char *)&__stack_chk_guard;
char a = p[sizeof(__stack_chk_guard)-1];
char b = p[sizeof(__stack_chk_guard)-2];
char c = p[0];
/* If you have the ability to generate random numbers in your kernel then use them */
p[sizeof(__stack_chk_guard)-1] = 255;
p[sizeof(__stack_chk_guard)-2] = '\n';
p[0] = 0;
JL_SET_STACK_BASE;
int ret = pmain(argc, argv);
char *build_path = jl_compileropts.build_path;
if (build_path) {
char *build_ji;
if (asprintf(&build_ji, "%s.ji",build_path) > 0) {
jl_save_system_image(build_ji);
free(build_ji);
char *build_o;
if (asprintf(&build_o, "%s.o",build_path) > 0) {
#ifndef _OS_WINDOWS_
jl_dump_linedebug_info();
#endif
jl_dump_objfile(build_o,0);
free(build_o);
}
else {
ios_printf(ios_stderr,"FATAL: failed to create string for .o build path");
}
}
else {
ios_printf(ios_stderr,"FATAL: failed to create string for .ji build path");
}
}
p[sizeof(__stack_chk_guard)-1] = a;
p[sizeof(__stack_chk_guard)-2] = b;
p[0] = c;
return ret;
}
jl_function_t *jl_typeinf_func=NULL;
DLLEXPORT void jl_enable_inference(void)
{
jl_typeinf_func = (jl_function_t*)jl_get_global(jl_base_module,
jl_symbol("typeinf_ext"));
}
static jl_value_t *core(char *name)
{
return jl_get_global(jl_core_module, jl_symbol(name));
}
static jl_value_t *basemod(char *name)
{
return jl_get_global(jl_base_module, jl_symbol(name));
}
// fetch references to things defined in boot.jl
void jl_get_builtin_hooks(void)
{
jl_nothing = core("nothing");
jl_root_task->tls = jl_nothing;
jl_root_task->consumers = jl_nothing;
jl_root_task->donenotify = jl_nothing;
jl_root_task->exception = jl_nothing;
jl_root_task->result = jl_nothing;
jl_char_type = (jl_datatype_t*)core("Char");
jl_int8_type = (jl_datatype_t*)core("Int8");
jl_uint8_type = (jl_datatype_t*)core("Uint8");
jl_int16_type = (jl_datatype_t*)core("Int16");
jl_uint16_type = (jl_datatype_t*)core("Uint16");
jl_uint32_type = (jl_datatype_t*)core("Uint32");
jl_uint64_type = (jl_datatype_t*)core("Uint64");
jl_float32_type = (jl_datatype_t*)core("Float32");
jl_float64_type = (jl_datatype_t*)core("Float64");
jl_floatingpoint_type = (jl_datatype_t*)core("FloatingPoint");
jl_number_type = (jl_datatype_t*)core("Number");
jl_stackovf_exception =
jl_apply((jl_function_t*)core("StackOverflowError"), NULL, 0);
jl_diverror_exception =
jl_apply((jl_function_t*)core("DivideError"), NULL, 0);
jl_domain_exception =
jl_apply((jl_function_t*)core("DomainError"), NULL, 0);
jl_overflow_exception =
jl_apply((jl_function_t*)core("OverflowError"), NULL, 0);
jl_inexact_exception =
jl_apply((jl_function_t*)core("InexactError"), NULL, 0);
jl_undefref_exception =
jl_apply((jl_function_t*)core("UndefRefError"),NULL,0);
jl_undefvarerror_type = (jl_datatype_t*)core("UndefVarError");
jl_interrupt_exception =
jl_apply((jl_function_t*)core("InterruptException"),NULL,0);
jl_bounds_exception =
jl_apply((jl_function_t*)core("BoundsError"),NULL,0);
jl_memory_exception =
jl_apply((jl_function_t*)core("MemoryError"),NULL,0);
jl_ascii_string_type = (jl_datatype_t*)core("ASCIIString");
jl_utf8_string_type = (jl_datatype_t*)core("UTF8String");
jl_symbolnode_type = (jl_datatype_t*)core("SymbolNode");
jl_getfieldnode_type = (jl_datatype_t*)core("GetfieldNode");
jl_array_uint8_type = jl_apply_type((jl_value_t*)jl_array_type,
jl_tuple2(jl_uint8_type,
jl_box_long(1)));