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omrsysinfo.c
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omrsysinfo.c
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/*******************************************************************************
* Copyright (c) 2015, 2021 IBM Corp. and others
*
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which accompanies this
* distribution and is available at https://www.eclipse.org/legal/epl-2.0/
* or the Apache License, Version 2.0 which accompanies this distribution and
* is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the following
* Secondary Licenses when the conditions for such availability set
* forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
* General Public License, version 2 with the GNU Classpath
* Exception [1] and GNU General Public License, version 2 with the
* OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] http://openjdk.java.net/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
*******************************************************************************/
/**
* @file
* @ingroup Port
* @brief System information
*/
#if 0
#define ENV_DEBUG
#endif
#if defined(LINUX) && !defined(OMRZTPF)
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#elif defined(OSX)
#define _XOPEN_SOURCE
#include <libproc.h>
#include <mach/mach.h>
#include <mach/processor_info.h>
#include <mach/mach_host.h>
#include <mach-o/dyld.h>
#include <sys/param.h>
#include <sys/mount.h>
#endif /* defined(LINUX) && !defined(OMRZTPF) */
#if defined(OSX) || defined(OMR_OS_BSD)
#include <sys/types.h>
#include <sys/sysctl.h>
#endif /* defined(OSX) || defined(OMR_OS_BSD) */
#if defined(OSX)
#include <crt_externs.h>
#endif /* defined(OSX) */
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/utsname.h>
#include <sys/stat.h>
#include <limits.h>
#include <dirent.h>
#include <errno.h>
#include <string.h>
#include <pwd.h>
#include <grp.h>
#include <sys/types.h>
#include "omrport.h"
#if defined(J9OS_I5)
#include "Xj9I5OSInterface.H"
#endif
#if !defined(J9ZOS390)
#include <sys/param.h>
#endif /* !defined(J9ZOS390) */
#include <sys/time.h>
#include <sys/resource.h>
#include <nl_types.h>
#include <langinfo.h>
#if defined(J9ZOS390)
#include "omrsimap.h"
#endif /* defined(J9ZOS390) */
#if defined(LINUXPPC) || (defined(S390) && defined(LINUX) && !defined(J9ZTPF)) || (defined(AARCH64) && defined(LINUX))
#include "auxv.h"
#include <strings.h>
#endif /* defined(LINUXPPC) || (defined(S390) && defined(LINUX) && !defined(J9ZTPF)) || (defined(AARCH64) && defined(LINUX)) */
#if (defined(S390))
#include "omrportpriv.h"
#include "omrportpg.h"
#endif /* defined(S390) */
#if defined(AIXPPC)
#include <fcntl.h>
#include <sys/procfs.h>
#include <sys/systemcfg.h>
#endif /* defined(AIXPPC) */
#include "omrsysinfo_helpers.h"
/* Start copy from omrfiletext.c */
/* __STDC_ISO_10646__ indicates that the platform wchar_t encoding is Unicode */
/* but older versions of libc fail to set the flag, even though they are Unicode */
#if defined(__STDC_ISO_10646__) || defined(LINUX) ||defined(OSX)
#define J9VM_USE_MBTOWC
#else /* defined(__STDC_ISO_10646__) || defined(LINUX) || defined(OSX) */
#include "omriconvhelpers.h"
#endif /* defined(__STDC_ISO_10646__) || defined(LINUX) || defined(OSX) */
/* a2e overrides nl_langinfo to return ASCII strings. We need the native EBCDIC string */
#if defined(J9ZOS390) && defined(nl_langinfo)
#undef nl_langinfo
#endif
#if defined(J9ZOS390)
#include "omrgetuserid.h"
#endif
/* End copy from omrfiletext.c */
#ifdef AIXPPC
#if defined(J9OS_I5)
/* The PASE compiler does not support libperfstat.h */
#else
#include <libperfstat.h>
#endif
#include <sys/proc.h>
/* omrsysinfo_get_number_CPUs_by_type */
#include <sys/thread.h>
#include <sys/rset.h>
#endif
#ifdef RS6000
#include <sys/systemcfg.h>
#include <sys/sysconfig.h>
#include <assert.h>
#if defined(OMR_ENV_DATA64)
#define LIBC_NAME "/usr/lib/libc.a(shr_64.o)"
#else
#define LIBC_NAME "/usr/lib/libc.a(shr.o)"
#endif
#endif
#if defined(LINUX) && !defined(OMRZTPF)
#include <linux/magic.h>
#include <sys/sysinfo.h>
#include <sys/vfs.h>
#include <sched.h>
#elif defined(OSX)
#include <sys/sysctl.h>
#endif /* defined(LINUX) && !defined(OMRZTPF) */
#include <unistd.h>
#if defined(LINUX)
#include "omrcgroup.h"
#endif /* defined(LINUX) */
#include "omrportpriv.h"
#include "omrportpg.h"
#include "omrportptb.h"
#include "ut_omrport.h"
#if defined(OMRZTPF)
#include <locale.h>
#include <tpf/c_cinfc.h>
#include <tpf/c_dctist.h>
#include <tpf/tpfapi.h>
#include <tpf/sysapi.h>
#endif /* defined(OMRZTPF) */
#if defined(J9ZOS390)
#include <sys/ps.h>
#include <sys/types.h>
#if !defined(OMR_EBCDIC)
#include "atoe.h"
#endif
#if !defined(PATH_MAX)
/* This is a somewhat arbitrarily selected fixed buffer size. */
#define PATH_MAX 1024
#endif
#pragma linkage (GETNCPUS,OS)
#pragma map (Get_Number_Of_CPUs,"GETNCPUS")
uintptr_t Get_Number_Of_CPUs();
#endif
#define JIFFIES 100
#define USECS_PER_SEC 1000000
#define TICKS_TO_USEC ((uint64_t)(USECS_PER_SEC/JIFFIES))
static uintptr_t copyEnvToBuffer(struct OMRPortLibrary *portLibrary, void *args);
static uintptr_t copyEnvToBufferSignalHandler(struct OMRPortLibrary *portLib, uint32_t gpType, void *gpInfo, void *unUsed);
static void setPortableError(OMRPortLibrary *portLibrary, const char *funcName, int32_t portlibErrno, int systemErrno);
#if (defined(LINUXPPC) || defined(AIXPPC))
static OMRProcessorArchitecture omrsysinfo_map_ppc_processor(const char *processorName);
const char* omrsysinfo_get_ppc_processor_feature_name(uint32_t feature);
#endif /* (defined(LINUXPPC) || defined(AIXPPC)) */
#if (defined(AIXPPC) || defined(S390) || defined(J9ZOS390))
static void omrsysinfo_set_feature(OMRProcessorDesc *desc, uint32_t feature);
#endif /* defined(AIXPPC) || defined(S390) || defined(J9ZOS390) */
#if defined(LINUXPPC)
static intptr_t omrsysinfo_get_linux_ppc_description(struct OMRPortLibrary *portLibrary, OMRProcessorDesc *desc);
#if !defined(AT_HWCAP2)
#define AT_HWCAP2 26 /* needed until glibc 2.17 */
#endif /* !defined(AT_HWCAP2) */
#endif /* defined(LINUXPPC) */
#if defined(AIXPPC)
static intptr_t omrsysinfo_get_aix_ppc_description(struct OMRPortLibrary *portLibrary, OMRProcessorDesc *desc);
#endif /* defined(AIXPPC) */
#if !defined(__power_8)
#define POWER_8 0x10000 /* Power 8 class CPU */
#define __power_8() (_system_configuration.implementation == POWER_8)
#if !defined(J9OS_I5_V6R1)
#define PPI8_1 0x4B
#define PPI8_2 0x4D
#define __phy_proc_imp_8() (_system_configuration.phys_implementation == PPI8_1 || _system_configuration.phys_implementation == PPI8_2)
#endif /* !defined(J9OS_I5_V6R1) */
#endif /* !defined(__power_8) */
#if !defined(__power_9)
#define POWER_9 0x20000 /* Power 9 class CPU */
#define __power_9() (_system_configuration.implementation == POWER_9)
#endif /* !defined(__power_9) */
#if !defined(__power_10)
#define POWER_10 0x40000 /* Power 10 class CPU */
#define __power_10() (_system_configuration.implementation == POWER_10)
#endif /* !defined(__power_10) */
#if defined(J9OS_I5_V6R1) /* vmx_version id only available since TL4 */
#define __power_vsx() (_system_configuration.vmx_version > 1)
#endif
#if !defined(J9OS_I5_V7R2) && !defined(J9OS_I5_V6R1)
/* both i 7.1 and i 7.2 do not support this function */
#if !defined(SC_TM_VER)
#define SC_TM_VER 59
#endif /* !defined(SC_TM_VER) */
#if !defined(__power_tm)
#define __power_tm() ((long)getsystemcfg(SC_TM_VER) > 0) /* taken from AIX 7.1 sys/systemcfg.h */
#endif /* !defined(__power_tm) */
#endif /* !defined(J9OS_I5_V7R2) && !defined(J9OS_I5_V6R1) */
#if (defined(S390) || defined(J9ZOS390) || defined(J9ZTPF))
static BOOLEAN omrsysinfo_test_stfle(struct OMRPortLibrary *portLibrary, uint64_t stfleBit);
static intptr_t omrsysinfo_get_s390_description(struct OMRPortLibrary *portLibrary, OMRProcessorDesc *desc);
const char * omrsysinfo_get_s390_processor_feature_name(uint32_t feature);
#endif /* defined(S390) || defined(J9ZOS390) || defined(J9ZTPF) */
#if defined(RISCV)
static intptr_t omrsysinfo_get_riscv_description(struct OMRPortLibrary *portLibrary, OMRProcessorDesc *desc);
#endif
#if defined(AARCH64) && defined(LINUX)
static const char *omrsysinfo_get_aarch64_processor_feature_name(uint32_t feature);
static intptr_t omrsysinfo_get_linux_aarch64_description(struct OMRPortLibrary *portLibrary, OMRProcessorDesc *desc);
#endif /* defined(AARCH64) && defined(LINUX) */
static const char getgroupsErrorMsgPrefix[] = "getgroups : ";
typedef struct EnvListItem {
struct EnvListItem *next;
char *nameAndValue;
} EnvListItem;
typedef struct CopyEnvToBufferArgs {
uintptr_t bufferSizeBytes;
void *buffer;
uintptr_t numElements;
} CopyEnvToBufferArgs;
/* For the omrsysinfo_limit_iterator */
struct {
int resource;
char *resourceName;
} limitMap[] = {
#if defined(RLIMIT_AS)
{RLIMIT_AS, "RLIMIT_AS"},
#endif
#if defined(RLIMIT_CORE)
{RLIMIT_CORE, "RLIMIT_CORE"},
#endif
#if defined(RLIMIT_CPU)
{RLIMIT_CPU, "RLIMIT_CPU"},
#endif
#if defined(RLIMIT_DATA)
{RLIMIT_DATA, "RLIMIT_DATA"},
#endif
#if defined(RLIMIT_FSIZE)
{RLIMIT_FSIZE, "RLIMIT_FSIZE"},
#endif
#if defined(RLIMIT_LOCKS)
{RLIMIT_LOCKS, "RLIMIT_LOCKS"},
#endif
#if defined(RLIMIT_MEMLOCK)
{RLIMIT_MEMLOCK, "RLIMIT_MEMLOCK"},
#endif
#if defined(RLIMIT_NOFILE)
{RLIMIT_NOFILE, "RLIMIT_NOFILE"},
#endif
#if defined(RLIMIT_THREADS)
{RLIMIT_THREADS, "RLIMIT_THREADS"},
#endif
#if defined(RLIMIT_NPROC)
{RLIMIT_NPROC, "RLIMIT_NPROC"},
#endif
#if defined(RLIMIT_RSS)
{RLIMIT_RSS, "RLIMIT_RSS"},
#endif
#if defined(RLIMIT_STACK)
{RLIMIT_STACK, "RLIMIT_STACK"},
#endif
#if defined(RLIMIT_MSGQUEUE)
{RLIMIT_MSGQUEUE, "RLIMIT_MSGQUEUE"}, /* since Linux 2.6.8 */
#endif
#if defined(RLIMIT_NICE)
{RLIMIT_NICE, "RLIMIT_NICE"}, /* since Linux 2.6.12*/
#endif
#if defined(RLIMIT_RTPRIO)
{RLIMIT_RTPRIO, "RLIMIT_RTPRIO"}, /* since Linux 2.6.12 */
#endif
#if defined(RLIMIT_SIGPENDING)
{RLIMIT_SIGPENDING, "RLIMIT_SIGPENDING"}, /* since linux 2.6.8 */
#endif
#if defined(RLIMIT_MEMLIMIT)
{RLIMIT_MEMLIMIT, "RLIMIT_MEMLIMIT"}, /* likely z/OS only */
#endif
};
#if defined(LINUX)
#define OMR_CGROUP_V1_MOUNT_POINT "/sys/fs/cgroup"
#define ROOT_CGROUP "/"
#define SYSTEMD_INIT_CGROUP "/init.scope"
#define OMR_PROC_PID_ONE_CGROUP_FILE "/proc/1/cgroup"
#define MAX_DEFAULT_VALUE_CHECK (LLONG_MAX - (1024 * 1024 * 1024)) /* subtracting the MAX page size (1GB) from LLONG_MAX to check against a value */
#define CGROUP_METRIC_FILE_CONTENT_MAX_LIMIT 1024
/* An entry in /proc/<pid>/cgroup is of following form:
* <hierarchy ID>:<subsystem>[,<subsystem>]*:<cgroup name>
*
* An example:
* 7:cpuacct,cpu:/mycgroup
*/
#define PROC_PID_CGROUP_ENTRY_FORMAT "%d:%[^:]:%s"
#define PROC_PID_CGROUP_SYSTEMD_ENTRY_FORMAT "%d::%s"
#define SINGLE_CGROUP_METRIC 1
/* Currently 12 subsystems or resource controllers are defined.
*/
typedef enum OMRCgroupSubsystem {
INVALID_SUBSYSTEM = -1,
BLKIO,
CPU,
CPUACCT,
CPUSET,
DEVICES,
FREEZER,
HUGETLB,
MEMORY,
NET_CLS,
NET_PRIO,
PERF_EVENT,
PIDS,
NUM_SUBSYSTEMS
} OMRCgroupSubsystem;
const char * const subsystemNames[NUM_SUBSYSTEMS] = {
"blkio",
"cpu",
"cpuacct",
"cpuset",
"devices",
"freezer",
"hugetlb",
"memory",
"net_cls",
"net_prio",
"perf_event",
"pids",
};
struct {
const char *name;
uint64_t flag;
} supportedSubsystems[] = {
{ "cpu", OMR_CGROUP_SUBSYSTEM_CPU },
{ "memory", OMR_CGROUP_SUBSYSTEM_MEMORY },
{ "cpuset", OMR_CGROUP_SUBSYSTEM_CPUSET}
};
typedef struct OMRCgroupMetricInfoElement {
char *metricTag;
char *metricKeyInFile;
char *metricUnit;
BOOLEAN isValueToBeChecked;
} OMRCgroupMetricInfoElement;
static struct OMRCgroupMetricInfoElement oomControlMetricElementList[] = {
{ "OOM Killer Disabled", "oom_kill_disable", NULL, FALSE },
{ "Under OOM", "under_oom", NULL, FALSE }
};
static struct OMRCgroupMetricInfoElement cpuStatMetricElementList[] = {
{ "Period intervals elapsed count", "nr_periods", NULL, FALSE },
{ "Throttled count", "nr_throttled", NULL, FALSE },
{ "Total throttle time", "throttled_time", "nanoseconds", FALSE }
};
typedef struct OMRCgroupSubsystemMetricMap {
char *metricFileName;
OMRCgroupMetricInfoElement *metricInfoElementList;
int32_t metricElementsCount;
} OMRCgroupSubsystemMetricMap;
static struct OMRCgroupSubsystemMetricMap omrCgroupMemoryMetricMap[] = {
{ "memory.limit_in_bytes", &(OMRCgroupMetricInfoElement){ "Memory Limit", NULL, "bytes", TRUE }, SINGLE_CGROUP_METRIC },
{ "memory.memsw.limit_in_bytes", &(OMRCgroupMetricInfoElement){ "Memory + Swap Limit", NULL, "bytes", TRUE }, SINGLE_CGROUP_METRIC },
{ "memory.usage_in_bytes", &(OMRCgroupMetricInfoElement){ "Memory Usage", NULL, "bytes", FALSE }, SINGLE_CGROUP_METRIC },
{ "memory.memsw.usage_in_bytes", &(OMRCgroupMetricInfoElement){ "Memory + Swap Usage", NULL, "bytes", FALSE }, SINGLE_CGROUP_METRIC },
{ "memory.max_usage_in_bytes", &(OMRCgroupMetricInfoElement){ "Memory Max Usage", NULL, "bytes", FALSE }, SINGLE_CGROUP_METRIC },
{ "memory.memsw.max_usage_in_bytes", &(OMRCgroupMetricInfoElement){ "Memory + Swap Max Usage", NULL, "bytes", FALSE }, SINGLE_CGROUP_METRIC },
{ "memory.failcnt", &(OMRCgroupMetricInfoElement){ "Memory limit exceeded count", NULL, NULL, FALSE }, SINGLE_CGROUP_METRIC },
{ "memory.memsw.failcnt", &(OMRCgroupMetricInfoElement){ "Memory + Swap limit exceeded count", NULL, NULL, FALSE }, SINGLE_CGROUP_METRIC },
{ "memory.oom_control", &oomControlMetricElementList[0], sizeof(oomControlMetricElementList)/sizeof(oomControlMetricElementList[0]) }
};
static struct OMRCgroupSubsystemMetricMap omrCgroupCpuMetricMap[] = {
{ "cpu.cfs_period_us", &(OMRCgroupMetricInfoElement){ "CPU Period", NULL, "microseconds", FALSE }, SINGLE_CGROUP_METRIC },
{ "cpu.cfs_quota_us", &(OMRCgroupMetricInfoElement){ "CPU Quota", NULL, "microseconds", TRUE }, SINGLE_CGROUP_METRIC },
{ "cpu.shares", &(OMRCgroupMetricInfoElement){ "CPU Shares", NULL, NULL, FALSE }, SINGLE_CGROUP_METRIC },
{ "cpu.stat", &cpuStatMetricElementList[0], sizeof(cpuStatMetricElementList)/sizeof(cpuStatMetricElementList[0]) }
};
static struct OMRCgroupSubsystemMetricMap omrCgroupCpusetMetricMap[] = {
{ "cpuset.cpu_exclusive", &(OMRCgroupMetricInfoElement){ "CPU exclusive", NULL, NULL, FALSE }, SINGLE_CGROUP_METRIC },
{ "cpuset.mem_exclusive", &(OMRCgroupMetricInfoElement){ "Mem exclusive", NULL, NULL, FALSE }, SINGLE_CGROUP_METRIC },
{ "cpuset.cpus", &(OMRCgroupMetricInfoElement){ "CPUs", NULL, NULL, FALSE }, SINGLE_CGROUP_METRIC },
{ "cpuset.mems", &(OMRCgroupMetricInfoElement){ "Mems", NULL, NULL, FALSE }, SINGLE_CGROUP_METRIC }
};
static uint32_t attachedPortLibraries;
static omrthread_monitor_t cgroupEntryListMonitor;
#endif /* defined(LINUX) */
static intptr_t cwdname(struct OMRPortLibrary *portLibrary, char **result);
static uint32_t getLimitSharedMemory(struct OMRPortLibrary *portLibrary, uint64_t *limit);
static uint32_t getLimitFileDescriptors(struct OMRPortLibrary *portLibrary, uint64_t *result, BOOLEAN hardLimitRequested);
static uint32_t setLimitFileDescriptors(struct OMRPortLibrary *portLibrary, uint64_t limit, BOOLEAN hardLimitRequested);
#if defined(LINUX) || defined(AIXPPC) || defined(J9ZOS390)
static intptr_t readSymbolicLink(struct OMRPortLibrary *portLibrary, char *linkFilename, char **result);
#endif /* defined(LINUX) || defined(AIXPPC) || defined(J9ZOS390) */
#if defined(AIXPPC) || defined(J9ZOS390)
static BOOLEAN isSymbolicLink(struct OMRPortLibrary *portLibrary, char *filename);
static intptr_t searchSystemPath(struct OMRPortLibrary *portLibrary, char *filename, char **result);
#endif /* defined(AIXPPC) || defined(J9ZOS390) */
#if defined(J9ZOS390)
static void setOSFeature(struct OMROSDesc *desc, uint32_t feature);
static intptr_t getZOSDescription(struct OMRPortLibrary *portLibrary, struct OMROSDesc *desc);
#endif /* defined(J9ZOS390) */
#if !defined(RS6000) && !defined(J9ZOS390) && !defined(OSX) && !defined(OMRZTPF)
static uint64_t getPhysicalMemory(struct OMRPortLibrary *portLibrary);
#elif defined(OMRZTPF) /* !defined(RS6000) && !defined(J9ZOS390) && !defined(OSX) && !defined(OMRZTPF) */
static uint64_t getPhysicalMemory();
#endif /* !defined(RS6000) && !defined(J9ZOS390) && !defined(OSX) && !defined(OMRZTPF) */
#if defined(OMRZTPF)
uintptr_t get_IPL_IstreamCount();
uintptr_t get_Dispatch_IstreamCount();
#endif /* defined(OMRZTPF) */
#if defined(LINUX) && !defined(OMRZTPF)
static BOOLEAN isCgroupV1Available(struct OMRPortLibrary *portLibrary);
static void freeCgroupEntries(struct OMRPortLibrary *portLibrary, OMRCgroupEntry *cgEntryList);
static char * getCgroupNameForSubsystem(struct OMRPortLibrary *portLibrary, OMRCgroupEntry *cgEntryList, const char *subsystem);
static int32_t addCgroupEntry(struct OMRPortLibrary *portLibrary, OMRCgroupEntry **cgEntryList, int32_t hierId, const char *subsystem, const char *cgroupName, uint64_t flag);
static int32_t readCgroupFile(struct OMRPortLibrary *portLibrary, int pid, BOOLEAN inContainer, OMRCgroupEntry **cgroupEntryList, uint64_t *availableSubsystems);
static OMRCgroupSubsystem getCgroupSubsystemFromFlag(uint64_t subsystemFlag);
static int32_t getAbsolutePathOfCgroupSubsystemFile(struct OMRPortLibrary *portLibrary, uint64_t subsystemFlag, const char *fileName, char *fullPath, intptr_t *bufferLength);
static int32_t getHandleOfCgroupSubsystemFile(struct OMRPortLibrary *portLibrary, uint64_t subsystemFlag, const char *fileName, FILE **subsystemFile);
static int32_t readCgroupMetricFromFile(struct OMRPortLibrary *portLibrary, uint64_t subsystemFlag, const char *fileName, const char *metricKeyInFile, char **fileContent, char *value);
static int32_t readCgroupSubsystemFile(struct OMRPortLibrary *portLibrary, uint64_t subsystemFlag, const char *fileName, int32_t numItemsToRead, const char *format, ...);
static int32_t isRunningInContainer(struct OMRPortLibrary *portLibrary, BOOLEAN *inContainer);
static int32_t getCgroupMemoryLimit(struct OMRPortLibrary *portLibrary, uint64_t *limit);
#endif /* defined(LINUX) */
#if defined(LINUX)
static int32_t retrieveLinuxMemoryStatsFromProcFS(struct OMRPortLibrary *portLibrary, struct J9MemoryInfo *memInfo);
static int32_t retrieveLinuxCgroupMemoryStats(struct OMRPortLibrary *portLibrary, struct OMRCgroupMemoryInfo *cgroupMemInfo);
static int32_t retrieveLinuxMemoryStats(struct OMRPortLibrary *portLibrary, struct J9MemoryInfo *memInfo);
#elif defined(OSX)
static int32_t retrieveOSXMemoryStats(struct OMRPortLibrary *portLibrary, struct J9MemoryInfo *memInfo);
#elif defined(AIXPPC)
static int32_t retrieveAIXMemoryStats(struct OMRPortLibrary *portLibrary, struct J9MemoryInfo *memInfo);
#endif
/**
* @internal
* Determines the proper portable error code to return given a native error code
*
* @param[in] errorCode The error code reported by the OS
*
* @return the (negative) portable error code
*/
static int32_t
findError(int32_t errorCode)
{
switch (errorCode) {
case EACCES:
/* FALLTHROUGH */
case EPERM:
return OMRPORT_ERROR_FILE_NOPERMISSION;
case EFAULT:
return OMRPORT_ERROR_FILE_EFAULT;
case EINVAL:
return OMRPORT_ERROR_FILE_INVAL;
case EBADF:
return OMRPORT_ERROR_FILE_BADF;
case ENOENT:
return OMRPORT_ERROR_FILE_NOENT;
case ENOTDIR:
return OMRPORT_ERROR_FILE_NOTDIR;
case ENOMEM:
return OMRPORT_ERROR_FILE_INSUFFICIENT_BUFFER;
case EMFILE:
/* FALLTHROUGH */
case ENFILE:
return OMRPORT_ERROR_FILE_TOO_MANY_OPEN_FILES;
default:
return OMRPORT_ERROR_FILE_OPFAILED;
}
}
void
omrsysinfo_set_number_user_specified_CPUs(struct OMRPortLibrary *portLibrary, uintptr_t number)
{
Trc_PRT_sysinfo_set_number_user_specified_CPUs_Entered();
portLibrary->portGlobals->userSpecifiedCPUs = number;
Trc_PRT_sysinfo_set_number_user_specified_CPUs_Exit(number);
}
intptr_t
omrsysinfo_process_exists(struct OMRPortLibrary *portLibrary, uintptr_t pid)
{
intptr_t rc = 0;
int result = 0;
result = kill(pid, 0);
/*
* If sig is 0, then no signal is sent, but error checking is still performed.
* By using signal == 0, kill just checks for the existence and accessibility of the process.
*/
if (0 == result) {
rc = 1; /* The process with pid exists and this process has sufficient permissions to send it a signal. */
} else if (-1 == result) { /* note that kill() returns only 0 or -1 */
if (errno == ESRCH) {
/* The kill() failed because was there are no processes or process groups corresponding to pid. */
rc = 0;
} else if (errno == EPERM) {
/* The target process exists but this process does not have permission to send it a signal. */
rc = 1;
} else {
rc = -1;
}
}
return rc;
}
const char *
omrsysinfo_get_CPU_architecture(struct OMRPortLibrary *portLibrary)
{
#if defined(RS6000) || defined(LINUXPPC)
#ifdef PPC64
#ifdef OMR_ENV_LITTLE_ENDIAN
return OMRPORT_ARCH_PPC64LE;
#else /* OMR_ENV_LITTLE_ENDIAN */
return OMRPORT_ARCH_PPC64;
#endif /* OMR_ENV_LITTLE_ENDIAN */
#else
return OMRPORT_ARCH_PPC;
#endif /* PPC64*/
#elif defined(J9X86)
return OMRPORT_ARCH_X86;
#elif defined(S390) || defined(J9ZOS390)
#if defined(S39064) || defined(J9ZOS39064)
return OMRPORT_ARCH_S390X;
#else
return OMRPORT_ARCH_S390;
#endif /* S39064 || J9ZOS39064 */
#elif defined(J9HAMMER)
return OMRPORT_ARCH_HAMMER;
#elif defined(J9ARM)
return OMRPORT_ARCH_ARM;
#elif defined(J9AARCH64)
return OMRPORT_ARCH_AARCH64;
#elif defined(RISCV)
return OMRPORT_ARCH_RISCV;
#else
return "unknown";
#endif
}
intptr_t
omrsysinfo_get_processor_description(struct OMRPortLibrary *portLibrary, OMRProcessorDesc *desc)
{
intptr_t rc = -1;
Trc_PRT_sysinfo_get_processor_description_Entered(desc);
if (NULL != desc) {
memset(desc, 0, sizeof(OMRProcessorDesc));
#if (defined(J9X86) || defined(J9HAMMER))
rc = omrsysinfo_get_x86_description(portLibrary, desc);
#elif defined(LINUXPPC)
rc = omrsysinfo_get_linux_ppc_description(portLibrary, desc);
#elif defined(AIXPPC)
rc = omrsysinfo_get_aix_ppc_description(portLibrary, desc);
#elif (defined(S390) || defined(J9ZOS390))
rc = omrsysinfo_get_s390_description(portLibrary, desc);
#elif defined(RISCV)
rc = omrsysinfo_get_riscv_description(portLibrary, desc);
#elif (defined(AARCH64) && defined(LINUX))
rc = omrsysinfo_get_linux_aarch64_description(portLibrary, desc);
#endif
}
Trc_PRT_sysinfo_get_processor_description_Exit(rc);
return rc;
}
BOOLEAN
omrsysinfo_processor_has_feature(struct OMRPortLibrary *portLibrary, OMRProcessorDesc *desc, uint32_t feature)
{
BOOLEAN rc = FALSE;
Trc_PRT_sysinfo_processor_has_feature_Entered(desc, feature);
#if defined(J9OS_I5)
#if defined(J9OS_I5_V5R4)
if ((OMR_FEATURE_PPC_HAS_VSX == feature) || (OMR_FEATURE_PPC_HAS_ALTIVEC == feature) || (OMR_FEATURE_PPC_HTM == feature)) {
Trc_PRT_sysinfo_processor_has_feature_Exit((UDATA)rc);
return rc;
}
#elif defined(J9OS_I5_V6R1) || defined(J9OS_I5_V7R2)
if (OMR_FEATURE_PPC_HTM == feature) {
Trc_PRT_sysinfo_processor_has_feature_Exit((UDATA)rc);
return rc;
}
#endif
#endif
if ((NULL != desc) && (feature < (OMRPORT_SYSINFO_FEATURES_SIZE * 32))) {
uint32_t featureIndex = feature / 32;
uint32_t featureShift = feature % 32;
rc = OMR_ARE_ALL_BITS_SET(desc->features[featureIndex], 1u << featureShift);
}
Trc_PRT_sysinfo_processor_has_feature_Exit((uintptr_t)rc);
return rc;
}
intptr_t
omrsysinfo_processor_set_feature(struct OMRPortLibrary *portLibrary, OMRProcessorDesc *desc, uint32_t feature, BOOLEAN enable)
{
intptr_t rc = -1;
Trc_PRT_sysinfo_processor_set_feature_Entered(desc, feature, enable);
if ((NULL != desc) && (feature < (OMRPORT_SYSINFO_FEATURES_SIZE * 32))) {
uint32_t featureIndex = feature / 32;
uint32_t featureShift = feature % 32;
if (enable) {
desc->features[featureIndex] |= (1u << featureShift);
}
else {
desc->features[featureIndex] &= ~(1u << featureShift);
}
rc = 0;
}
Trc_PRT_sysinfo_processor_set_feature_Exit(rc);
return rc;
}
const char*
omrsysinfo_get_processor_feature_name(struct OMRPortLibrary *portLibrary, uint32_t feature)
{
const char* rc = "null";
Trc_PRT_sysinfo_get_processor_feature_name_Entered(feature);
#if (defined(J9X86) || defined(J9HAMMER))
rc = omrsysinfo_get_x86_processor_feature_name(feature);
#elif (defined(S390) || defined(J9ZOS390) || defined(J9ZTPF))
rc = omrsysinfo_get_s390_processor_feature_name(feature);
#elif (defined(AIXPPC) || defined(LINUXPPC))
rc = omrsysinfo_get_ppc_processor_feature_name(feature);
#elif (defined(AARCH64) && defined(LINUX))
rc = omrsysinfo_get_aarch64_processor_feature_name(feature);
#endif
Trc_PRT_sysinfo_get_processor_feature_name_Exit(rc);
return rc;
}
/**
* Generate the corresponding string literals for the provided OMRProcessorDesc. The buffer will be zero
* initialized and overwritten with the processor feature output string.
*
* @param[in] portLibrary The port library.
* @param[in] desc The struct that contains the list of processor features to be converted to string.
* @param[out] buffer The processor feature output string.
* @param[in] length The size of the buffer in number of bytes.
*
* @return 0 on success, -1 if output string size exceeds input length.
*/
intptr_t
omrsysinfo_get_processor_feature_string(struct OMRPortLibrary *portLibrary, OMRProcessorDesc *desc, char * buffer, const size_t length)
{
BOOLEAN start = TRUE;
size_t i = 0;
size_t j = 0;
size_t numberOfBits = 0;
size_t bufferLength = 0;
memset(buffer, 0, length);
for (i = 0; i < OMRPORT_SYSINFO_FEATURES_SIZE; i++) {
numberOfBits = CHAR_BIT * sizeof(desc->features[i]);
for (j = 0; j < numberOfBits; j++) {
if (desc->features[i] & (1 << j)) {
uint32_t feature = (uint32_t)(i * numberOfBits + j);
const char * featureName = omrsysinfo_get_processor_feature_name(portLibrary, feature);
size_t featureLength = strlen(featureName);
if (start == FALSE) {
strncat(buffer, " ", length - bufferLength - 1);
bufferLength += 1;
} else {
start = FALSE;
}
if (length - bufferLength - 1 < featureLength) {
return -1;
}
strncat(buffer, featureName, length - bufferLength - 1);
bufferLength += featureLength;
}
}
}
return 0;
}
#if (defined(AIXPPC) || defined(S390) || defined(J9ZOS390))
/**
* @internal
* Helper to set appropriate feature field in a OMRProcessorDesc struct.
*
* @param[in] desc pointer to the struct that contains the CPU type and features.
* @param[in] feature to set
*
*/
static void
omrsysinfo_set_feature(OMRProcessorDesc *desc, uint32_t feature)
{
if ((NULL != desc) && (feature < (OMRPORT_SYSINFO_FEATURES_SIZE * 32))) {
uint32_t featureIndex = feature / 32;
uint32_t featureShift = feature % 32;
desc->features[featureIndex] = (desc->features[featureIndex] | (1u << (featureShift)));
}
}
#endif /* defined(AIXPPC) || defined(S390) || defined(J9ZOS390) */
#if (defined(LINUXPPC) || defined(AIXPPC))
const char *
omrsysinfo_get_ppc_processor_feature_name(uint32_t feature)
{
switch (feature) {
case OMR_FEATURE_PPC_32:
return "mode32";
case OMR_FEATURE_PPC_64:
return "mode64";
case OMR_FEATURE_PPC_601_INSTR:
return "601";
case OMR_FEATURE_PPC_HAS_ALTIVEC:
return "vec";
case OMR_FEATURE_PPC_HAS_FPU:
return "fpu";
case OMR_FEATURE_PPC_HAS_MMU:
return "mmu";
case OMR_FEATURE_PPC_HAS_4xxMAC:
return "4xxmac";
case OMR_FEATURE_PPC_UNIFIED_CACHE:
return "uc";
case OMR_FEATURE_PPC_HAS_SPE:
return "spe";
case OMR_FEATURE_PPC_HAS_EFP_SINGLE:
return "efp_single";
case OMR_FEATURE_PPC_HAS_EFP_DOUBLE:
return "efp_double";
case OMR_FEATURE_PPC_POWER4:
return "p4";
case OMR_FEATURE_PPC_POWER5:
return "p5";
case OMR_FEATURE_PPC_POWER5_PLUS:
return "p5+";
case OMR_FEATURE_PPC_CELL_BE:
return "cell_be";
case OMR_FEATURE_PPC_BOOKE:
return "booke";
case OMR_FEATURE_PPC_SMT:
return "smt";
case OMR_FEATURE_PPC_ICACHE_SNOOP:
return "icache_snoop";
case OMR_FEATURE_PPC_ARCH_2_05:
return "arch_2_05";
case OMR_FEATURE_PPC_PA6T:
return "pa6t";
case OMR_FEATURE_PPC_HAS_DFP:
return "dfp";
case OMR_FEATURE_PPC_POWER6_EXT:
return "p6_ext";
case OMR_FEATURE_PPC_ARCH_2_06:
return "arch_2_06";
case OMR_FEATURE_PPC_HAS_VSX:
return "vsx";
case OMR_FEATURE_PPC_PSERIES_PERFMON_COMPAT:
return "perfmon_compact";
case OMR_FEATURE_PPC_TRUE_LE:
return "true_le";
case OMR_FEATURE_PPC_LE:
return "le";
case OMR_FEATURE_PPC_ARCH_2_07:
return "arch_2_07";
case OMR_FEATURE_PPC_HTM:
return "htm";
case OMR_FEATURE_PPC_DSCR:
return "dscr";
case OMR_FEATURE_PPC_EBB:
return "ebb";
case OMR_FEATURE_PPC_ISEL:
return "isel";
case OMR_FEATURE_PPC_TAR:
return "tar";
default:
return "null";
}
return "null";
}
#endif /* defined(LINUXPPC) || defined(AIXPPC) */
#if defined(LINUXPPC)
/**
* @internal
* Populates OMRProcessorDesc *desc on Linux PPC
*
* @param[in] desc pointer to the struct that will contain the CPU type and features.
*
* @return 0 on success, -1 on failure
*/
static intptr_t
omrsysinfo_get_linux_ppc_description(struct OMRPortLibrary *portLibrary, OMRProcessorDesc *desc)
{
char* platform = NULL;
char* base_platform = NULL;
/* initialize auxv prior to querying the auxv */
if (prefetch_auxv() != 0) {
goto _error;
}
/* Linux PPC processor */
platform = (char *) query_auxv(AT_PLATFORM);
if ((NULL == platform) || (((char *) -1) == platform)) {
goto _error;
}
desc->processor = omrsysinfo_map_ppc_processor(platform);
/* Linux PPC physical processor */
base_platform = (char *) query_auxv(AT_BASE_PLATFORM);
if ((NULL == base_platform) || (((char *) -1) == base_platform)) {
/* AT_PLATFORM is known from call above. Default BASE to unknown */
desc->physicalProcessor = OMR_PROCESSOR_PPC_UNKNOWN;
} else {
desc->physicalProcessor = omrsysinfo_map_ppc_processor(base_platform);
}
/* Linux PPC features:
* Can't error check these calls as both 0 & -1 are valid
* bit fields that could be returned by this query.
*/
desc->features[0] = query_auxv(AT_HWCAP);
desc->features[1] = query_auxv(AT_HWCAP2);
return 0;
_error:
desc->processor = OMR_PROCESSOR_PPC_UNKNOWN;
desc->physicalProcessor = OMR_PROCESSOR_PPC_UNKNOWN;
desc->features[0] = 0;
desc->features[1] = 0;
return -1;
}
/**
* @internal
* Maps a PPC processor string to the OMRProcessorArchitecture enum.
*
* @param[in] processorName
*
* @return An OMRProcessorArchitecture OMR_PROCESSOR_PPC_* found otherwise OMR_PROCESSOR_PPC_UNKNOWN.
*/
static OMRProcessorArchitecture
omrsysinfo_map_ppc_processor(const char *processorName)
{
OMRProcessorArchitecture rc = OMR_PROCESSOR_PPC_UNKNOWN;
if (0 == strncasecmp(processorName, "ppc403", 6)) {
rc = OMR_PROCESSOR_PPC_PWR403;
} else if (0 == strncasecmp(processorName, "ppc405", 6)) {
rc = OMR_PROCESSOR_PPC_PWR405;
} else if (0 == strncasecmp(processorName, "ppc440gp", 8)) {
rc = OMR_PROCESSOR_PPC_PWR440;
} else if (0 == strncasecmp(processorName, "ppc601", 6)) {
rc = OMR_PROCESSOR_PPC_PWR601;
} else if (0 == strncasecmp(processorName, "ppc603", 6)) {
rc = OMR_PROCESSOR_PPC_PWR603;
} else if (0 == strncasecmp(processorName, "ppc604", 6)) {
rc = OMR_PROCESSOR_PPC_PWR604;
} else if (0 == strncasecmp(processorName, "ppc7400", 7)) {
rc = OMR_PROCESSOR_PPC_PWR603;
} else if (0 == strncasecmp(processorName, "ppc750", 6)) {
rc = OMR_PROCESSOR_PPC_7XX;
} else if (0 == strncasecmp(processorName, "rs64", 4)) {
rc = OMR_PROCESSOR_PPC_PULSAR;
} else if (0 == strncasecmp(processorName, "ppc970", 6)) {
rc = OMR_PROCESSOR_PPC_GP;
} else if (0 == strncasecmp(processorName, "power3", 6)) {
rc = OMR_PROCESSOR_PPC_PWR630;
} else if (0 == strncasecmp(processorName, "power4", 6)) {
rc = OMR_PROCESSOR_PPC_GP;
} else if (0 == strncasecmp(processorName, "power5", 6)) {
rc = OMR_PROCESSOR_PPC_GR;
} else if (0 == strncasecmp(processorName, "power6", 6)) {
rc = OMR_PROCESSOR_PPC_P6;
} else if (0 == strncasecmp(processorName, "power7", 6)) {
rc = OMR_PROCESSOR_PPC_P7;
} else if (0 == strncasecmp(processorName, "power8", 6)) {
rc = OMR_PROCESSOR_PPC_P8;
} else if (0 == strncasecmp(processorName, "power9", 6)) {
rc = OMR_PROCESSOR_PPC_P9;
} else if (0 == strncasecmp(processorName, "power10", 7)) {
rc = OMR_PROCESSOR_PPC_P10;
}
return rc;
}
#endif /* defined(LINUXPPC) */
#if defined(AIXPPC)
/**
* @internal
* Populates OMRProcessorDesc *desc on AIX
*
* @param[in] desc pointer to the struct that will contain the CPU type and features.
*
* @return 0 on success, -1 on failure
*/
static intptr_t
omrsysinfo_get_aix_ppc_description(struct OMRPortLibrary *portLibrary, OMRProcessorDesc *desc)
{
/* AIX processor */
if (__power_rs1() || __power_rsc()) {
desc->processor = OMR_PROCESSOR_PPC_RIOS1;
} else if (__power_rs2()) {