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/*
* mtsupport.c
*
* by Jon Kinsey, 2008
*
* Multithreaded support functions, moved out of multithread.c
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 3 or later of the GNU General Public License as
* published by the Free Software Foundation.
*
* 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, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: mtsupport.c,v 1.10 2015/01/17 21:56:19 mdpetch Exp $
*/
#include "config.h"
#include "multithread.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#if USE_GTK
#include <gtk/gtk.h>
#include <gtkgame.h>
#endif
#include "speed.h"
#include "rollout.h"
#include "util.h"
#include "lib/simd.h"
SSE_ALIGN(ThreadData td);
extern ThreadLocalData *
MT_CreateThreadLocalData(int id)
{
ThreadLocalData *tld = (ThreadLocalData *) malloc(sizeof(ThreadLocalData));
tld->id = id;
tld->pnnState = (NNState *) malloc(sizeof(NNState) * 3);
memset(tld->pnnState, 0, sizeof(NNState) * 3);
tld->pnnState[CLASS_RACE - CLASS_RACE].savedBase = malloc(nnRace.cHidden * sizeof(float));
memset(tld->pnnState[CLASS_RACE - CLASS_RACE].savedBase, 0, nnRace.cHidden * sizeof(float));
tld->pnnState[CLASS_RACE - CLASS_RACE].savedIBase = malloc(nnRace.cInput * sizeof(float));
memset(tld->pnnState[CLASS_RACE - CLASS_RACE].savedIBase, 0, nnRace.cInput * sizeof(float));
tld->pnnState[CLASS_CRASHED - CLASS_RACE].savedBase = malloc(nnCrashed.cHidden * sizeof(float));
memset(tld->pnnState[CLASS_CRASHED - CLASS_RACE].savedBase, 0, nnCrashed.cHidden * sizeof(float));
tld->pnnState[CLASS_CRASHED - CLASS_RACE].savedIBase = malloc(nnCrashed.cInput * sizeof(float));
memset(tld->pnnState[CLASS_CRASHED - CLASS_RACE].savedIBase, 0, nnCrashed.cInput * sizeof(float));
tld->pnnState[CLASS_CONTACT - CLASS_RACE].savedBase = malloc(nnContact.cHidden * sizeof(float));
memset(tld->pnnState[CLASS_CONTACT - CLASS_RACE].savedBase, 0, nnContact.cHidden * sizeof(float));
tld->pnnState[CLASS_CONTACT - CLASS_RACE].savedIBase = malloc(nnContact.cInput * sizeof(float));
memset(tld->pnnState[CLASS_CONTACT - CLASS_RACE].savedIBase, 0, nnContact.cInput * sizeof(float));
tld->aMoves = (move *) malloc(sizeof(move) * MAX_INCOMPLETE_MOVES);
memset(tld->aMoves, 0, sizeof(move) * MAX_INCOMPLETE_MOVES);
return tld;
}
#if USE_MULTITHREAD
#if defined(DEBUG_MULTITHREADED) && defined(WIN32)
unsigned int mainThreadID;
#endif
#ifdef GLIB_THREADS
#if GLIB_CHECK_VERSION (2,32,0)
static GMutex condMutex; /* Extra mutex needed for waiting */
#else
static GMutex *condMutex = NULL; /* Extra mutex needed for waiting */
#endif
#endif
#ifdef GLIB_THREADS
#if GLIB_CHECK_VERSION (2,32,0)
/* Dynamic allocation of GPrivate is deprecated */
static GPrivate private_item = G_PRIVATE_INIT(free);
extern void
TLSCreate(TLSItem * pItem)
{
*pItem = &private_item;
}
#else
extern void
TLSCreate(TLSItem * pItem)
{
*pItem = g_private_new(g_free);
}
#endif
extern void
TLSFree(TLSItem UNUSED(pItem))
{ /* Done automaticaly by glib */
}
extern void
TLSSetValue(TLSItem pItem, size_t value)
{
size_t *pNew = (size_t *) malloc(sizeof(size_t));
*pNew = value;
g_private_set(pItem, (gpointer) pNew);
}
#define TLSGet(item) *((size_t*)g_private_get(item))
extern void
InitManualEvent(ManualEvent * pME)
{
ManualEvent pNewME = g_malloc(sizeof(*pNewME));
#if GLIB_CHECK_VERSION (2,32,0)
g_cond_init(&pNewME->cond);
#else
pNewME->cond = g_cond_new();
#endif
pNewME->signalled = FALSE;
*pME = pNewME;
}
extern void
FreeManualEvent(ManualEvent ME)
{
#if GLIB_CHECK_VERSION (2,32,0)
g_cond_clear(&ME->cond);
#else
g_cond_free(ME->cond);
#endif
g_free(ME);
}
extern void
WaitForManualEvent(ManualEvent ME)
{
#if GLIB_CHECK_VERSION (2,32,0)
gint64 end_time;
#else
GTimeVal tv;
#endif
multi_debug("wait for manual event locks");
#if GLIB_CHECK_VERSION (2,32,0)
g_mutex_lock(&condMutex);
end_time = g_get_monotonic_time() + 10 * G_TIME_SPAN_SECOND;
#else
g_mutex_lock(condMutex);
#endif
while (!ME->signalled) {
multi_debug("waiting for manual event");
#if GLIB_CHECK_VERSION (2,32,0)
if (!g_cond_wait_until(&ME->cond, &condMutex, end_time))
#else
g_get_current_time(&tv);
g_time_val_add(&tv, 10 * 1000 * 1000);
if (g_cond_timed_wait(ME->cond, condMutex, &tv))
#endif
break;
else {
multi_debug("still waiting for manual event");
}
}
#if GLIB_CHECK_VERSION (2,32,0)
g_mutex_unlock(&condMutex);
#else
g_mutex_unlock(condMutex);
#endif
multi_debug("wait for manual event unlocks");
}
extern void
ResetManualEvent(ManualEvent ME)
{
multi_debug("reset manual event locks");
#if GLIB_CHECK_VERSION (2,32,0)
g_mutex_lock(&condMutex);
ME->signalled = FALSE;
g_mutex_unlock(&condMutex);
#else
g_mutex_lock(condMutex);
ME->signalled = FALSE;
g_mutex_unlock(condMutex);
#endif
multi_debug("reset manual event unlocks");
}
extern void
SetManualEvent(ManualEvent ME)
{
multi_debug("reset manual event locks");
#if GLIB_CHECK_VERSION (2,32,0)
g_mutex_lock(&condMutex);
ME->signalled = TRUE;
g_cond_broadcast(&ME->cond);
g_mutex_unlock(&condMutex);
#else
g_mutex_lock(condMutex);
ME->signalled = TRUE;
g_cond_broadcast(ME->cond);
g_mutex_unlock(condMutex);
#endif
multi_debug("reset manual event unlocks");
}
#if GLIB_CHECK_VERSION (2,32,0)
extern void
InitMutex(Mutex * pMutex)
{
g_mutex_init(pMutex);
}
extern void
FreeMutex(Mutex * mutex)
{
g_mutex_clear(mutex);
}
#else
extern void
InitMutex(Mutex * pMutex)
{
*pMutex = g_mutex_new();
}
extern void
FreeMutex(Mutex * mutex)
{
g_mutex_free(*mutex);
}
#endif
extern void
Mutex_Lock(Mutex * mutex, const char *reason)
{
#ifdef DEBUG_MULTITHREADED
multi_debug(reason);
#else
(void) reason;
#endif
#if GLIB_CHECK_VERSION (2,32,0)
g_mutex_lock(mutex);
#else
g_mutex_lock(*mutex);
#endif
}
extern void
Mutex_Release(Mutex * mutex)
{
#ifdef DEBUG_MULTITHREADED
multi_debug("Releasing lock");
#endif
#if GLIB_CHECK_VERSION (2,32,0)
g_mutex_unlock(mutex);
#else
g_mutex_unlock(*mutex);
#endif
}
#else /* win32 */
extern void
TLSCreate(TLSItem * ppItem)
{
*ppItem = TlsAlloc();
if (*ppItem == TLS_OUT_OF_INDEXES)
PrintSystemError("calling TlsAlloc");
}
extern void
TLSFree(TLSItem pItem)
{
free(TlsGetValue(pItem));
TlsFree(pItem);
}
extern void
TLSSetValue(TLSItem pItem, int value)
{
int *pNew = (int *) malloc(sizeof(int));
*pNew = value;
if (TlsSetValue(pItem, pNew) == 0)
PrintSystemError("calling TLSSetValue");
}
#define TLSGet(item) *((int*)TlsGetValue(item))
extern void
InitManualEvent(ManualEvent * pME)
{
*pME = CreateEvent(NULL, TRUE, FALSE, NULL);
if (*pME == NULL)
PrintSystemError("creating manual event");
}
extern void
FreeManualEvent(ManualEvent ME)
{
CloseHandle(ME);
}
extern void
InitMutex(Mutex * pMutex)
{
*pMutex = CreateMutex(NULL, FALSE, NULL);
if (*pMutex == NULL)
PrintSystemError("creating mutex");
}
extern void
FreeMutex(Mutex * mutex)
{
CloseHandle(*mutex);
}
#ifdef DEBUG_MULTITHREADED
void
Mutex_Lock(Mutex mutex, const char *reason)
{
if (WaitForSingleObject(mutex, 0) == WAIT_OBJECT_0) { /* Got mutex */
multi_debug("%s: lock acquired", reason);
} else {
multi_debug("%s: waiting on lock", reason);
WaitForSingleObject(mutex, INFINITE);
multi_debug("lock relinquished");
}
}
void
Mutex_Release(Mutex mutex)
{
multi_debug("Releasing lock");
ReleaseMutex(mutex);
}
#else
#define Mutex_Lock(mutex, reason) WaitForSingleObject(mutex, INFINITE)
#define Mutex_Release(mutex) ReleaseMutex(mutex)
#endif
#endif
extern void
MT_InitThreads(void)
{
#if !GLIB_CHECK_VERSION (2,32,0)
if (!g_thread_supported())
g_thread_init(NULL);
g_assert(g_thread_supported());
#endif
td.tasks = NULL;
td.doneTasks = td.addedTasks = 0;
td.totalTasks = -1;
InitManualEvent(&td.activity);
TLSCreate(&td.tlsItem);
TLSSetValue(td.tlsItem, (size_t) MT_CreateThreadLocalData(0)); /* Main thread shares id 0 */
#if defined(DEBUG_MULTITHREADED) && defined(WIN32)
mainThreadID = GetCurrentThreadId();
#endif
InitMutex(&td.multiLock);
InitMutex(&td.queueLock);
InitManualEvent(&td.syncStart);
InitManualEvent(&td.syncEnd);
#if defined(GLIB_THREADS) && !GLIB_CHECK_VERSION (2,32,0)
if (condMutex == NULL)
condMutex = g_mutex_new();
#endif
td.numThreads = 0;
}
extern void
CloseThread(void *UNUSED(unused))
{
int i;
NNState *pnnState = ((ThreadLocalData *) TLSGet(td.tlsItem))->pnnState;
g_assert(td.closingThreads);
ThreadLocalData *pTLD = (ThreadLocalData *) TLSGet(td.tlsItem);
if (pTLD->aMoves)
free(pTLD->aMoves);
for (i = 0; i < 3; i++) {
free(pnnState[i].savedBase);
free(pnnState[i].savedIBase);
}
free(((ThreadLocalData *) TLSGet(td.tlsItem))->pnnState);
free((void *) TLSGet(td.tlsItem));
MT_SafeInc(&td.result);
}
/* Revisit this later for inclusion */
#if 0
extern void
MT_CloseThreads(void)
{
td.closingThreads = TRUE;
mt_add_tasks(td.numThreads, CloseThread, NULL, NULL);
if (MT_WaitForTasks(NULL, 0, FALSE) != (int) td.numThreads)
g_print("Error closing threads!\n");
}
#endif
extern void
MT_Close(void)
{
MT_CloseThreads();
FreeManualEvent(td.activity);
FreeMutex(&td.multiLock);
FreeMutex(&td.queueLock);
FreeManualEvent(td.syncStart);
FreeManualEvent(td.syncEnd);
}
extern void
MT_Exclusive(void)
{
Mutex_Lock(&td.multiLock, "Exclusive lock");
}
extern void
MT_Release(void)
{
Mutex_Release(&td.multiLock);
}
#ifdef DEBUG_MULTITHREADED
extern void
multi_debug(const char *str, ...)
{
int id;
va_list vl;
char tn[5];
char buf[1024];
/* Sync output so order makes some sense */
#ifdef WIN32
WaitForSingleObject(td.multiLock, INFINITE);
#endif
/* With glib threads, locking here doesn't seem to work :
* GLib (gthread-posix.c): Unexpected error from C library during 'pthread_mutex_lock': Resource deadlock avoided. Aborting.
* Timestamp the output instead.
* Maybe the g_get_*_time() calls will sync output as well anyway... */
va_start(vl, str);
vsprintf(buf, str, vl);
id = MT_GetThreadID();
#if defined(WIN32)
if (id == 0 && GetCurrentThreadId() == mainThreadID)
#else
if (id == 0)
#endif
strcpy(tn, "MT");
else
sprintf(tn, "T%d", id + 1);
#ifdef GLIB_THREADS
#if GLIB_CHECK_VERSION (2,28,0)
printf("%" G_GINT64_FORMAT " %s: %s\n", g_get_monotonic_time(), tn, buf);
#else
{
GTimeVal tv;
g_get_current_time(&tv);
printf("%lu %s: %s\n", 1000000UL * tv.tv_sec + tv.tv_usec, tn, buf);
}
#endif
#else
printf("%s: %s\n", tn, buf);
#endif
va_end(vl);
#ifdef WIN32
ReleaseMutex(td.multiLock);
#endif
}
#endif
#else
#include "multithread.h"
#include <stdlib.h>
#if USE_GTK
#include <gtk/gtk.h>
#include <gtkgame.h>
#endif
SSE_ALIGN(ThreadData td);
extern void
MT_InitThreads(void)
{
td.tld = MT_CreateThreadLocalData(0); /* Main thread shares id 0 */
}
extern void
MT_Close(void)
{
int i;
NNState *pnnState;
if (!td.tld)
return;
free(td.tld->aMoves);
pnnState = td.tld->pnnState;
for (i = 0; i < 3; i++) {
free(pnnState[i].savedBase);
free(pnnState[i].savedIBase);
}
free(pnnState);
free(td.tld);
}
#endif
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