Retro68/binutils/gprofng/libcollector/heaptrace.c
Wolfgang Thaller f485e125c4 binutils 2.39
2022-10-27 20:45:45 +02:00

496 lines
16 KiB
C

/* Copyright (C) 2021 Free Software Foundation, Inc.
Contributed by Oracle.
This file is part of GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
/*
* Heap tracing events
*/
#include "config.h"
#include <dlfcn.h>
#include "gp-defs.h"
#include "collector_module.h"
#include "gp-experiment.h"
#include "data_pckts.h"
#include "tsd.h"
/* TprintfT(<level>,...) definitions. Adjust per module as needed */
#define DBG_LT0 0 // for high-level configuration, unexpected errors/warnings
#define DBG_LT1 1 // for configuration details, warnings
#define DBG_LT2 2
#define DBG_LT3 3
#define DBG_LT4 4
/* define the packets to be written out */
typedef struct Heap_packet
{ /* Malloc/free tracing packet */
Common_packet comm;
Heap_type mtype; /* subtype of packet */
Size_type size; /* size of malloc/realloc request */
Vaddr_type vaddr; /* vaddr given to free or returned from malloc/realloc */
Vaddr_type ovaddr; /* Previous vaddr given to realloc */
} Heap_packet;
static int init_heap_intf ();
static int open_experiment (const char *);
static int start_data_collection (void);
static int stop_data_collection (void);
static int close_experiment (void);
static int detach_experiment (void);
static ModuleInterface module_interface = {
SP_HEAPTRACE_FILE, /* description */
NULL, /* initInterface */
open_experiment, /* openExperiment */
start_data_collection, /* startDataCollection */
stop_data_collection, /* stopDataCollection */
close_experiment, /* closeExperiment */
detach_experiment /* detachExperiment (fork child) */
};
static CollectorInterface *collector_interface = NULL;
static int heap_mode = 0;
static CollectorModule heap_hndl = COLLECTOR_MODULE_ERR;
static unsigned heap_key = COLLECTOR_TSD_INVALID_KEY;
#define CHCK_REENTRANCE(x) ( !heap_mode || ((x) = collector_interface->getKey( heap_key )) == NULL || (*(x) != 0) )
#define PUSH_REENTRANCE(x) ((*(x))++)
#define POP_REENTRANCE(x) ((*(x))--)
#define CALL_REAL(x) (__real_##x)
#define NULL_PTR(x) (__real_##x == NULL)
#define gethrtime collector_interface->getHiResTime
#ifdef DEBUG
#define Tprintf(...) if (collector_interface) collector_interface->writeDebugInfo( 0, __VA_ARGS__ )
#define TprintfT(...) if (collector_interface) collector_interface->writeDebugInfo( 1, __VA_ARGS__ )
#else
#define Tprintf(...)
#define TprintfT(...)
#endif
static void *(*__real_malloc)(size_t) = NULL;
static void (*__real_free)(void *);
static void *(*__real_realloc)(void *, size_t);
static void *(*__real_memalign)(size_t, size_t);
static void *(*__real_calloc)(size_t, size_t);
static void *(*__real_valloc)(size_t);
static char *(*__real_strchr)(const char *, int);
void *__libc_malloc (size_t);
void __libc_free (void *);
void *__libc_realloc (void *, size_t);
static void
collector_memset (void *s, int c, size_t n)
{
unsigned char *s1 = s;
while (n--)
*s1++ = (unsigned char) c;
}
void
__collector_module_init (CollectorInterface *_collector_interface)
{
if (_collector_interface == NULL)
return;
collector_interface = _collector_interface;
Tprintf (0, "heaptrace: __collector_module_init\n");
heap_hndl = collector_interface->registerModule (&module_interface);
/* Initialize next module */
ModuleInitFunc next_init = (ModuleInitFunc) dlsym (RTLD_NEXT, "__collector_module_init");
if (next_init != NULL)
next_init (_collector_interface);
return;
}
static int
open_experiment (const char *exp)
{
if (collector_interface == NULL)
{
Tprintf (0, "heaptrace: collector_interface is null.\n");
return COL_ERROR_HEAPINIT;
}
if (heap_hndl == COLLECTOR_MODULE_ERR)
{
Tprintf (0, "heaptrace: handle create failed.\n");
collector_interface->writeLog ("<event kind=\"%s\" id=\"%d\">data handle not created</event>\n",
SP_JCMD_CERROR, COL_ERROR_HEAPINIT);
return COL_ERROR_HEAPINIT;
}
TprintfT (0, "heaptrace: open_experiment %s\n", exp);
if (NULL_PTR (malloc))
init_heap_intf ();
const char *params = collector_interface->getParams ();
while (params)
{
if ((params[0] == 'H') && (params[1] == ':'))
{
params += 2;
break;
}
params = CALL_REAL (strchr)(params, ';');
if (params)
params++;
}
if (params == NULL) /* Heap data collection not specified */
return COL_ERROR_HEAPINIT;
heap_key = collector_interface->createKey (sizeof ( int), NULL, NULL);
if (heap_key == (unsigned) - 1)
{
Tprintf (0, "heaptrace: TSD key create failed.\n");
collector_interface->writeLog ("<event kind=\"%s\" id=\"%d\">TSD key not created</event>\n",
SP_JCMD_CERROR, COL_ERROR_HEAPINIT);
return COL_ERROR_HEAPINIT;
}
collector_interface->writeLog ("<profile name=\"%s\">\n", SP_JCMD_HEAPTRACE);
collector_interface->writeLog (" <profdata fname=\"%s\"/>\n",
module_interface.description);
/* Record Heap_packet description */
Heap_packet *pp = NULL;
collector_interface->writeLog (" <profpckt kind=\"%d\" uname=\"Heap tracing data\">\n", HEAP_PCKT);
collector_interface->writeLog (" <field name=\"LWPID\" uname=\"Lightweight process id\" offset=\"%d\" type=\"%s\"/>\n",
&pp->comm.lwp_id, sizeof (pp->comm.lwp_id) == 4 ? "INT32" : "INT64");
collector_interface->writeLog (" <field name=\"THRID\" uname=\"Thread number\" offset=\"%d\" type=\"%s\"/>\n",
&pp->comm.thr_id, sizeof (pp->comm.thr_id) == 4 ? "INT32" : "INT64");
collector_interface->writeLog (" <field name=\"CPUID\" uname=\"CPU id\" offset=\"%d\" type=\"%s\"/>\n",
&pp->comm.cpu_id, sizeof (pp->comm.cpu_id) == 4 ? "INT32" : "INT64");
collector_interface->writeLog (" <field name=\"TSTAMP\" uname=\"High resolution timestamp\" offset=\"%d\" type=\"%s\"/>\n",
&pp->comm.tstamp, sizeof (pp->comm.tstamp) == 4 ? "INT32" : "INT64");
collector_interface->writeLog (" <field name=\"FRINFO\" offset=\"%d\" type=\"%s\"/>\n",
&pp->comm.frinfo, sizeof (pp->comm.frinfo) == 4 ? "INT32" : "INT64");
collector_interface->writeLog (" <field name=\"HTYPE\" uname=\"Heap trace function type\" offset=\"%d\" type=\"%s\"/>\n",
&pp->mtype, sizeof (pp->mtype) == 4 ? "INT32" : "INT64");
collector_interface->writeLog (" <field name=\"HSIZE\" uname=\"Memory size\" offset=\"%d\" type=\"%s\"/>\n",
&pp->size, sizeof (pp->size) == 4 ? "UINT32" : "UINT64");
collector_interface->writeLog (" <field name=\"HVADDR\" uname=\"Memory address\" offset=\"%d\" type=\"%s\"/>\n",
&pp->vaddr, sizeof (pp->vaddr) == 4 ? "UINT32" : "UINT64");
collector_interface->writeLog (" <field name=\"HOVADDR\" uname=\"Previous memory address\" offset=\"%d\" type=\"%s\"/>\n",
&pp->ovaddr, sizeof (pp->ovaddr) == 4 ? "UINT32" : "UINT64");
collector_interface->writeLog (" </profpckt>\n");
collector_interface->writeLog ("</profile>\n");
return COL_ERROR_NONE;
}
static int
start_data_collection (void)
{
heap_mode = 1;
Tprintf (0, "heaptrace: start_data_collection\n");
return 0;
}
static int
stop_data_collection (void)
{
heap_mode = 0;
Tprintf (0, "heaptrace: stop_data_collection\n");
return 0;
}
static int
close_experiment (void)
{
heap_mode = 0;
heap_key = COLLECTOR_TSD_INVALID_KEY;
Tprintf (0, "heaptrace: close_experiment\n");
return 0;
}
static int
detach_experiment (void)
/* fork child. Clean up state but don't write to experiment */
{
heap_mode = 0;
heap_key = COLLECTOR_TSD_INVALID_KEY;
Tprintf (0, "heaptrace: detach_experiment\n");
return 0;
}
static int in_init_heap_intf = 0; // Flag that we are in init_heap_intf()
static int
init_heap_intf ()
{
void *dlflag;
in_init_heap_intf = 1;
__real_malloc = (void*(*)(size_t))dlsym (RTLD_NEXT, "malloc");
if (__real_malloc == NULL)
{
/* We are probably dlopened after libthread/libc,
* try to search in the previously loaded objects
*/
__real_malloc = (void*(*)(size_t))dlsym (RTLD_DEFAULT, "malloc");
if (__real_malloc == NULL)
{
Tprintf (0, "heaptrace: ERROR: real malloc not found\n");
in_init_heap_intf = 0;
return 1;
}
Tprintf (DBG_LT1, "heaptrace: real malloc found with RTLD_DEFAULT\n");
dlflag = RTLD_DEFAULT;
}
else
{
Tprintf (DBG_LT1, "heaptrace: real malloc found with RTLD_NEXT\n");
dlflag = RTLD_NEXT;
}
__real_free = (void(*)(void *))dlsym (dlflag, "free");
__real_realloc = (void*(*)(void *, size_t))dlsym (dlflag, "realloc");
__real_memalign = (void*(*)(size_t, size_t))dlsym (dlflag, "memalign");
__real_calloc = (void*(*)(size_t, size_t))dlsym (dlflag, "calloc");
__real_valloc = (void*(*)(size_t))dlsym (dlflag, "valloc");
__real_strchr = (char*(*)(const char *, int))dlsym (dlflag, "strchr");
Tprintf (0, "heaptrace: init_heap_intf done\n");
in_init_heap_intf = 0;
return 0;
}
/*------------------------------------------------------------- malloc */
void *
malloc (size_t size)
{
void *ret;
int *guard;
Heap_packet hpacket;
/* Linux startup workaround */
if (!heap_mode)
{
void *ppp = (void *) __libc_malloc (size);
Tprintf (DBG_LT4, "heaptrace: LINUX malloc(%ld, %p)...\n", (long) size, ppp);
return ppp;
}
if (NULL_PTR (malloc))
init_heap_intf ();
if (CHCK_REENTRANCE (guard))
{
ret = (void *) CALL_REAL (malloc)(size);
Tprintf (DBG_LT4, "heaptrace: real malloc(%ld) = %p\n", (long) size, ret);
return ret;
}
PUSH_REENTRANCE (guard);
ret = (void *) CALL_REAL (malloc)(size);
collector_memset (&hpacket, 0, sizeof ( Heap_packet));
hpacket.comm.tsize = sizeof ( Heap_packet);
hpacket.comm.tstamp = gethrtime ();
hpacket.mtype = MALLOC_TRACE;
hpacket.size = (Size_type) size;
hpacket.vaddr = (intptr_t) ret;
hpacket.comm.frinfo = collector_interface->getFrameInfo (heap_hndl, hpacket.comm.tstamp, FRINFO_FROM_STACK, &hpacket);
collector_interface->writeDataRecord (heap_hndl, (Common_packet*) & hpacket);
POP_REENTRANCE (guard);
return (void *) ret;
}
/*------------------------------------------------------------- free */
void
free (void *ptr)
{
int *guard;
Heap_packet hpacket;
/* Linux startup workaround */
if (!heap_mode)
{
// Tprintf(DBG_LT4,"heaptrace: LINUX free(%p)...\n",ptr);
__libc_free (ptr);
return;
}
if (NULL_PTR (malloc))
init_heap_intf ();
if (CHCK_REENTRANCE (guard))
{
CALL_REAL (free)(ptr);
return;
}
if (ptr == NULL)
return;
PUSH_REENTRANCE (guard);
/* Get a timestamp before 'free' to enforce consistency */
hrtime_t ts = gethrtime ();
CALL_REAL (free)(ptr);
collector_memset (&hpacket, 0, sizeof ( Heap_packet));
hpacket.comm.tsize = sizeof ( Heap_packet);
hpacket.comm.tstamp = ts;
hpacket.mtype = FREE_TRACE;
hpacket.vaddr = (intptr_t) ptr;
hpacket.comm.frinfo = collector_interface->getFrameInfo (heap_hndl, hpacket.comm.tstamp, FRINFO_FROM_STACK, &hpacket);
collector_interface->writeDataRecord (heap_hndl, (Common_packet*) & hpacket);
POP_REENTRANCE (guard);
return;
}
/*------------------------------------------------------------- realloc */
void *
realloc (void *ptr, size_t size)
{
void *ret;
int *guard;
Heap_packet hpacket;
/* Linux startup workaround */
if (!heap_mode)
{
void * ppp = (void *) __libc_realloc (ptr, size);
Tprintf (DBG_LT4, "heaptrace: LINUX realloc(%ld, %p->%p)...\n",
(long) size, ptr, ppp);
return ppp;
}
if (NULL_PTR (realloc))
init_heap_intf ();
if (CHCK_REENTRANCE (guard))
{
ret = (void *) CALL_REAL (realloc)(ptr, size);
return ret;
}
PUSH_REENTRANCE (guard);
hrtime_t ts = gethrtime ();
ret = (void *) CALL_REAL (realloc)(ptr, size);
collector_memset (&hpacket, 0, sizeof ( Heap_packet));
hpacket.comm.tsize = sizeof ( Heap_packet);
hpacket.comm.tstamp = ts;
hpacket.mtype = REALLOC_TRACE;
hpacket.size = (Size_type) size;
hpacket.vaddr = (intptr_t) ret;
hpacket.comm.frinfo = collector_interface->getFrameInfo (heap_hndl, hpacket.comm.tstamp, FRINFO_FROM_STACK, &hpacket);
collector_interface->writeDataRecord (heap_hndl, (Common_packet*) & hpacket);
POP_REENTRANCE (guard);
return (void *) ret;
}
/*------------------------------------------------------------- memalign */
void *
memalign (size_t align, size_t size)
{
void *ret;
int *guard;
Heap_packet hpacket;
if (NULL_PTR (memalign))
init_heap_intf ();
if (CHCK_REENTRANCE (guard))
{
ret = (void *) CALL_REAL (memalign)(align, size);
return ret;
}
PUSH_REENTRANCE (guard);
ret = (void *) CALL_REAL (memalign)(align, size);
collector_memset (&hpacket, 0, sizeof ( Heap_packet));
hpacket.comm.tsize = sizeof ( Heap_packet);
hpacket.comm.tstamp = gethrtime ();
hpacket.mtype = MALLOC_TRACE;
hpacket.size = (Size_type) size;
hpacket.vaddr = (intptr_t) ret;
hpacket.comm.frinfo = collector_interface->getFrameInfo (heap_hndl, hpacket.comm.tstamp, FRINFO_FROM_STACK, &hpacket);
collector_interface->writeDataRecord (heap_hndl, (Common_packet*) & hpacket);
POP_REENTRANCE (guard);
return ret;
}
/*------------------------------------------------------------- valloc */
void *
valloc (size_t size)
{
void *ret;
int *guard;
Heap_packet hpacket;
if (NULL_PTR (memalign))
init_heap_intf ();
if (CHCK_REENTRANCE (guard))
{
ret = (void *) CALL_REAL (valloc)(size);
return ret;
}
PUSH_REENTRANCE (guard);
ret = (void *) CALL_REAL (valloc)(size);
collector_memset (&hpacket, 0, sizeof ( Heap_packet));
hpacket.comm.tsize = sizeof ( Heap_packet);
hpacket.comm.tstamp = gethrtime ();
hpacket.mtype = MALLOC_TRACE;
hpacket.size = (Size_type) size;
hpacket.vaddr = (intptr_t) ret;
hpacket.comm.frinfo = collector_interface->getFrameInfo (heap_hndl, hpacket.comm.tstamp, FRINFO_FROM_STACK, &hpacket);
collector_interface->writeDataRecord (heap_hndl, (Common_packet*) & hpacket);
POP_REENTRANCE (guard);
return ret;
}
/*------------------------------------------------------------- calloc */
void *
calloc (size_t size, size_t esize)
{
void *ret;
int *guard;
Heap_packet hpacket;
if (NULL_PTR (calloc))
{
if (in_init_heap_intf != 0)
return NULL; // Terminate infinite loop
init_heap_intf ();
}
if (CHCK_REENTRANCE (guard))
{
ret = (void *) CALL_REAL (calloc)(size, esize);
return ret;
}
PUSH_REENTRANCE (guard);
ret = (void *) CALL_REAL (calloc)(size, esize);
collector_memset (&hpacket, 0, sizeof ( Heap_packet));
hpacket.comm.tsize = sizeof ( Heap_packet);
hpacket.comm.tstamp = gethrtime ();
hpacket.mtype = MALLOC_TRACE;
hpacket.size = (Size_type) (size * esize);
hpacket.vaddr = (intptr_t) ret;
hpacket.comm.frinfo = collector_interface->getFrameInfo (heap_hndl, hpacket.comm.tstamp, FRINFO_FROM_STACK, &hpacket);
collector_interface->writeDataRecord (heap_hndl, (Common_packet*) & hpacket);
POP_REENTRANCE (guard);
return ret;
}
/* __collector_heap_record is used to record java allocations/deallocations.
* It uses the same facilities as regular heap tracing for now.
*/
void
__collector_heap_record (int mtype, size_t size, void *vaddr)
{
int *guard;
Heap_packet hpacket;
if (CHCK_REENTRANCE (guard))
return;
PUSH_REENTRANCE (guard);
collector_memset (&hpacket, 0, sizeof ( Heap_packet));
hpacket.comm.tsize = sizeof ( Heap_packet);
hpacket.comm.tstamp = gethrtime ();
hpacket.mtype = mtype;
hpacket.size = (Size_type) size;
hpacket.vaddr = (intptr_t) vaddr;
hpacket.comm.frinfo = collector_interface->getFrameInfo (heap_hndl, hpacket.comm.tstamp, FRINFO_FROM_STACK, &hpacket);
collector_interface->writeDataRecord (heap_hndl, (Common_packet*) & hpacket);
POP_REENTRANCE (guard);
return;
}