forked from OSchip/llvm-project
482 lines
15 KiB
C
482 lines
15 KiB
C
/*===-- jitprofiling.c - JIT (Just-In-Time) Profiling API----------*- C -*-===*
|
|
*
|
|
* The LLVM Compiler Infrastructure
|
|
*
|
|
* This file is distributed under the University of Illinois Open Source
|
|
* License. See LICENSE.TXT for details.
|
|
*
|
|
*===----------------------------------------------------------------------===*
|
|
*
|
|
* This file provides Intel(R) Performance Analyzer JIT (Just-In-Time)
|
|
* Profiling API implementation.
|
|
*
|
|
* NOTE: This file comes in a style different from the rest of LLVM
|
|
* source base since this is a piece of code shared from Intel(R)
|
|
* products. Please do not reformat / re-style this code to make
|
|
* subsequent merges and contributions from the original source base eaiser.
|
|
*
|
|
*===----------------------------------------------------------------------===*/
|
|
#include "ittnotify_config.h"
|
|
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
#include <windows.h>
|
|
#pragma optimize("", off)
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
#include <pthread.h>
|
|
#include <dlfcn.h>
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
#include <malloc.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "jitprofiling.h"
|
|
|
|
static const char rcsid[] = "\n@(#) $Revision: 243501 $\n";
|
|
|
|
#define DLL_ENVIRONMENT_VAR "VS_PROFILER"
|
|
|
|
#ifndef NEW_DLL_ENVIRONMENT_VAR
|
|
#if ITT_ARCH==ITT_ARCH_IA32
|
|
#define NEW_DLL_ENVIRONMENT_VAR "INTEL_JIT_PROFILER32"
|
|
#else
|
|
#define NEW_DLL_ENVIRONMENT_VAR "INTEL_JIT_PROFILER64"
|
|
#endif
|
|
#endif /* NEW_DLL_ENVIRONMENT_VAR */
|
|
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
#define DEFAULT_DLLNAME "JitPI.dll"
|
|
HINSTANCE m_libHandle = NULL;
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
#define DEFAULT_DLLNAME "libJitPI.so"
|
|
void* m_libHandle = NULL;
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
|
|
/* default location of JIT profiling agent on Android */
|
|
#define ANDROID_JIT_AGENT_PATH "/data/intel/libittnotify.so"
|
|
|
|
/* the function pointers */
|
|
typedef unsigned int(*TPInitialize)(void);
|
|
static TPInitialize FUNC_Initialize=NULL;
|
|
|
|
typedef unsigned int(*TPNotify)(unsigned int, void*);
|
|
static TPNotify FUNC_NotifyEvent=NULL;
|
|
|
|
static iJIT_IsProfilingActiveFlags executionMode = iJIT_NOTHING_RUNNING;
|
|
|
|
/* end collector dll part. */
|
|
|
|
/* loadiJIT_Funcs() : this function is called just in the beginning
|
|
* and is responsible to load the functions from BistroJavaCollector.dll
|
|
* result:
|
|
* on success: the functions loads, iJIT_DLL_is_missing=0, return value = 1
|
|
* on failure: the functions are NULL, iJIT_DLL_is_missing=1, return value = 0
|
|
*/
|
|
static int loadiJIT_Funcs(void);
|
|
|
|
/* global representing whether the BistroJavaCollector can't be loaded */
|
|
static int iJIT_DLL_is_missing = 0;
|
|
|
|
/* Virtual stack - the struct is used as a virtual stack for each thread.
|
|
* Every thread initializes with a stack of size INIT_TOP_STACK.
|
|
* Every method entry decreases from the current stack point,
|
|
* and when a thread stack reaches its top of stack (return from the global
|
|
* function), the top of stack and the current stack increase. Notice that
|
|
* when returning from a function the stack pointer is the address of
|
|
* the function return.
|
|
*/
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
static DWORD threadLocalStorageHandle = 0;
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
static pthread_key_t threadLocalStorageHandle = (pthread_key_t)0;
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
|
|
#define INIT_TOP_Stack 10000
|
|
|
|
typedef struct
|
|
{
|
|
unsigned int TopStack;
|
|
unsigned int CurrentStack;
|
|
} ThreadStack, *pThreadStack;
|
|
|
|
/* end of virtual stack. */
|
|
|
|
/*
|
|
* The function for reporting virtual-machine related events to VTune.
|
|
* Note: when reporting iJVM_EVENT_TYPE_ENTER_NIDS, there is no need to fill
|
|
* in the stack_id field in the iJIT_Method_NIDS structure, as VTune fills it.
|
|
* The return value in iJVM_EVENT_TYPE_ENTER_NIDS &&
|
|
* iJVM_EVENT_TYPE_LEAVE_NIDS events will be 0 in case of failure.
|
|
* in iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED event
|
|
* it will be -1 if EventSpecificData == 0 otherwise it will be 0.
|
|
*/
|
|
|
|
ITT_EXTERN_C int JITAPI
|
|
iJIT_NotifyEvent(iJIT_JVM_EVENT event_type, void *EventSpecificData)
|
|
{
|
|
int ReturnValue;
|
|
|
|
/*
|
|
* This section is for debugging outside of VTune.
|
|
* It creates the environment variables that indicates call graph mode.
|
|
* If running outside of VTune remove the remark.
|
|
*
|
|
*
|
|
* static int firstTime = 1;
|
|
* char DoCallGraph[12] = "DoCallGraph";
|
|
* if (firstTime)
|
|
* {
|
|
* firstTime = 0;
|
|
* SetEnvironmentVariable( "BISTRO_COLLECTORS_DO_CALLGRAPH", DoCallGraph);
|
|
* }
|
|
*
|
|
* end of section.
|
|
*/
|
|
|
|
/* initialization part - the functions have not been loaded yet. This part
|
|
* will load the functions, and check if we are in Call Graph mode.
|
|
* (for special treatment).
|
|
*/
|
|
if (!FUNC_NotifyEvent)
|
|
{
|
|
if (iJIT_DLL_is_missing)
|
|
return 0;
|
|
|
|
/* load the Function from the DLL */
|
|
if (!loadiJIT_Funcs())
|
|
return 0;
|
|
|
|
/* Call Graph initialization. */
|
|
}
|
|
|
|
/* If the event is method entry/exit, check that in the current mode
|
|
* VTune is allowed to receive it
|
|
*/
|
|
if ((event_type == iJVM_EVENT_TYPE_ENTER_NIDS ||
|
|
event_type == iJVM_EVENT_TYPE_LEAVE_NIDS) &&
|
|
(executionMode != iJIT_CALLGRAPH_ON))
|
|
{
|
|
return 0;
|
|
}
|
|
/* This section is performed when method enter event occurs.
|
|
* It updates the virtual stack, or creates it if this is the first
|
|
* method entry in the thread. The stack pointer is decreased.
|
|
*/
|
|
if (event_type == iJVM_EVENT_TYPE_ENTER_NIDS)
|
|
{
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
pThreadStack threadStack =
|
|
(pThreadStack)TlsGetValue (threadLocalStorageHandle);
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
pThreadStack threadStack =
|
|
(pThreadStack)pthread_getspecific(threadLocalStorageHandle);
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
|
|
/* check for use of reserved method IDs */
|
|
if ( ((piJIT_Method_NIDS) EventSpecificData)->method_id <= 999 )
|
|
return 0;
|
|
|
|
if (!threadStack)
|
|
{
|
|
/* initialize the stack. */
|
|
threadStack = (pThreadStack) calloc (sizeof(ThreadStack), 1);
|
|
threadStack->TopStack = INIT_TOP_Stack;
|
|
threadStack->CurrentStack = INIT_TOP_Stack;
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
TlsSetValue(threadLocalStorageHandle,(void*)threadStack);
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
pthread_setspecific(threadLocalStorageHandle,(void*)threadStack);
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
}
|
|
|
|
/* decrease the stack. */
|
|
((piJIT_Method_NIDS) EventSpecificData)->stack_id =
|
|
(threadStack->CurrentStack)--;
|
|
}
|
|
|
|
/* This section is performed when method leave event occurs
|
|
* It updates the virtual stack.
|
|
* Increases the stack pointer.
|
|
* If the stack pointer reached the top (left the global function)
|
|
* increase the pointer and the top pointer.
|
|
*/
|
|
if (event_type == iJVM_EVENT_TYPE_LEAVE_NIDS)
|
|
{
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
pThreadStack threadStack =
|
|
(pThreadStack)TlsGetValue (threadLocalStorageHandle);
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
pThreadStack threadStack =
|
|
(pThreadStack)pthread_getspecific(threadLocalStorageHandle);
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
|
|
/* check for use of reserved method IDs */
|
|
if ( ((piJIT_Method_NIDS) EventSpecificData)->method_id <= 999 )
|
|
return 0;
|
|
|
|
if (!threadStack)
|
|
{
|
|
/* Error: first report in this thread is method exit */
|
|
exit (1);
|
|
}
|
|
|
|
((piJIT_Method_NIDS) EventSpecificData)->stack_id =
|
|
++(threadStack->CurrentStack) + 1;
|
|
|
|
if (((piJIT_Method_NIDS) EventSpecificData)->stack_id
|
|
> threadStack->TopStack)
|
|
((piJIT_Method_NIDS) EventSpecificData)->stack_id =
|
|
(unsigned int)-1;
|
|
}
|
|
|
|
if (event_type == iJVM_EVENT_TYPE_METHOD_LOAD_FINISHED)
|
|
{
|
|
/* check for use of reserved method IDs */
|
|
if ( ((piJIT_Method_Load) EventSpecificData)->method_id <= 999 )
|
|
return 0;
|
|
}
|
|
|
|
ReturnValue = (int)FUNC_NotifyEvent(event_type, EventSpecificData);
|
|
|
|
return ReturnValue;
|
|
}
|
|
|
|
/* The new mode call back routine */
|
|
ITT_EXTERN_C void JITAPI
|
|
iJIT_RegisterCallbackEx(void *userdata, iJIT_ModeChangedEx
|
|
NewModeCallBackFuncEx)
|
|
{
|
|
/* is it already missing... or the load of functions from the DLL failed */
|
|
if (iJIT_DLL_is_missing || !loadiJIT_Funcs())
|
|
{
|
|
/* then do not bother with notifications */
|
|
NewModeCallBackFuncEx(userdata, iJIT_NO_NOTIFICATIONS);
|
|
/* Error: could not load JIT functions. */
|
|
return;
|
|
}
|
|
/* nothing to do with the callback */
|
|
}
|
|
|
|
/*
|
|
* This function allows the user to query in which mode, if at all,
|
|
*VTune is running
|
|
*/
|
|
ITT_EXTERN_C iJIT_IsProfilingActiveFlags JITAPI iJIT_IsProfilingActive()
|
|
{
|
|
if (!iJIT_DLL_is_missing)
|
|
{
|
|
loadiJIT_Funcs();
|
|
}
|
|
|
|
return executionMode;
|
|
}
|
|
|
|
/* this function loads the collector dll (BistroJavaCollector)
|
|
* and the relevant functions.
|
|
* on success: all functions load, iJIT_DLL_is_missing = 0, return value = 1
|
|
* on failure: all functions are NULL, iJIT_DLL_is_missing = 1, return value = 0
|
|
*/
|
|
static int loadiJIT_Funcs()
|
|
{
|
|
static int bDllWasLoaded = 0;
|
|
char *dllName = (char*)rcsid; /* !! Just to avoid unused code elimination */
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
DWORD dNameLength = 0;
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
|
|
if(bDllWasLoaded)
|
|
{
|
|
/* dll was already loaded, no need to do it for the second time */
|
|
return 1;
|
|
}
|
|
|
|
/* Assumes that the DLL will not be found */
|
|
iJIT_DLL_is_missing = 1;
|
|
FUNC_NotifyEvent = NULL;
|
|
|
|
if (m_libHandle)
|
|
{
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
FreeLibrary(m_libHandle);
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
dlclose(m_libHandle);
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
m_libHandle = NULL;
|
|
}
|
|
|
|
/* Try to get the dll name from the environment */
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
dNameLength = GetEnvironmentVariableA(NEW_DLL_ENVIRONMENT_VAR, NULL, 0);
|
|
if (dNameLength)
|
|
{
|
|
DWORD envret = 0;
|
|
dllName = (char*)malloc(sizeof(char) * (dNameLength + 1));
|
|
envret = GetEnvironmentVariableA(NEW_DLL_ENVIRONMENT_VAR,
|
|
dllName, dNameLength);
|
|
if (envret)
|
|
{
|
|
/* Try to load the dll from the PATH... */
|
|
m_libHandle = LoadLibraryExA(dllName,
|
|
NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
|
|
}
|
|
free(dllName);
|
|
} else {
|
|
/* Try to use old VS_PROFILER variable */
|
|
dNameLength = GetEnvironmentVariableA(DLL_ENVIRONMENT_VAR, NULL, 0);
|
|
if (dNameLength)
|
|
{
|
|
DWORD envret = 0;
|
|
dllName = (char*)malloc(sizeof(char) * (dNameLength + 1));
|
|
envret = GetEnvironmentVariableA(DLL_ENVIRONMENT_VAR,
|
|
dllName, dNameLength);
|
|
if (envret)
|
|
{
|
|
/* Try to load the dll from the PATH... */
|
|
m_libHandle = LoadLibraryA(dllName);
|
|
}
|
|
free(dllName);
|
|
}
|
|
}
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
dllName = getenv(NEW_DLL_ENVIRONMENT_VAR);
|
|
if (!dllName)
|
|
dllName = getenv(DLL_ENVIRONMENT_VAR);
|
|
#ifdef ANDROID
|
|
if (!dllName)
|
|
dllName = ANDROID_JIT_AGENT_PATH;
|
|
#endif
|
|
if (dllName)
|
|
{
|
|
/* Try to load the dll from the PATH... */
|
|
m_libHandle = dlopen(dllName, RTLD_LAZY);
|
|
}
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
|
|
if (!m_libHandle)
|
|
{
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
m_libHandle = LoadLibraryA(DEFAULT_DLLNAME);
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
m_libHandle = dlopen(DEFAULT_DLLNAME, RTLD_LAZY);
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
}
|
|
|
|
/* if the dll wasn't loaded - exit. */
|
|
if (!m_libHandle)
|
|
{
|
|
iJIT_DLL_is_missing = 1; /* don't try to initialize
|
|
* JIT agent the second time
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
FUNC_NotifyEvent = (TPNotify)GetProcAddress(m_libHandle, "NotifyEvent");
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
FUNC_NotifyEvent = (TPNotify)dlsym(m_libHandle, "NotifyEvent");
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
if (!FUNC_NotifyEvent)
|
|
{
|
|
FUNC_Initialize = NULL;
|
|
return 0;
|
|
}
|
|
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
FUNC_Initialize = (TPInitialize)GetProcAddress(m_libHandle, "Initialize");
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
FUNC_Initialize = (TPInitialize)dlsym(m_libHandle, "Initialize");
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
if (!FUNC_Initialize)
|
|
{
|
|
FUNC_NotifyEvent = NULL;
|
|
return 0;
|
|
}
|
|
|
|
executionMode = (iJIT_IsProfilingActiveFlags)FUNC_Initialize();
|
|
|
|
bDllWasLoaded = 1;
|
|
iJIT_DLL_is_missing = 0; /* DLL is ok. */
|
|
|
|
/*
|
|
* Call Graph mode: init the thread local storage
|
|
* (need to store the virtual stack there).
|
|
*/
|
|
if ( executionMode == iJIT_CALLGRAPH_ON )
|
|
{
|
|
/* Allocate a thread local storage slot for the thread "stack" */
|
|
if (!threadLocalStorageHandle)
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
threadLocalStorageHandle = TlsAlloc();
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
pthread_key_create(&threadLocalStorageHandle, NULL);
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* This function should be called by the user whenever a thread ends,
|
|
* to free the thread "virtual stack" storage
|
|
*/
|
|
ITT_EXTERN_C void JITAPI FinalizeThread()
|
|
{
|
|
if (threadLocalStorageHandle)
|
|
{
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
pThreadStack threadStack =
|
|
(pThreadStack)TlsGetValue (threadLocalStorageHandle);
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
pThreadStack threadStack =
|
|
(pThreadStack)pthread_getspecific(threadLocalStorageHandle);
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
if (threadStack)
|
|
{
|
|
free (threadStack);
|
|
threadStack = NULL;
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
TlsSetValue (threadLocalStorageHandle, threadStack);
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
pthread_setspecific(threadLocalStorageHandle, threadStack);
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This function should be called by the user when the process ends,
|
|
* to free the local storage index
|
|
*/
|
|
ITT_EXTERN_C void JITAPI FinalizeProcess()
|
|
{
|
|
if (m_libHandle)
|
|
{
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
FreeLibrary(m_libHandle);
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
dlclose(m_libHandle);
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
m_libHandle = NULL;
|
|
}
|
|
|
|
if (threadLocalStorageHandle)
|
|
#if ITT_PLATFORM==ITT_PLATFORM_WIN
|
|
TlsFree (threadLocalStorageHandle);
|
|
#else /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
pthread_key_delete(threadLocalStorageHandle);
|
|
#endif /* ITT_PLATFORM==ITT_PLATFORM_WIN */
|
|
}
|
|
|
|
/*
|
|
* This function should be called by the user for any method once.
|
|
* The function will return a unique method ID, the user should maintain
|
|
* the ID for each method
|
|
*/
|
|
ITT_EXTERN_C unsigned int JITAPI iJIT_GetNewMethodID()
|
|
{
|
|
static unsigned int methodID = 0x100000;
|
|
|
|
if (methodID == 0)
|
|
return 0; /* ERROR : this is not a valid value */
|
|
|
|
return methodID++;
|
|
}
|