Mercurial > projects > ldc
view runtime/internal/critical.c @ 979:523bf4f166bc
Fix some assembler issues:
The assembler was miscompiling "add" (specifically, the "add reg/mem, imm"
variations).
The change that caused this seems to have been made because without it, some
"add"s didn't compile at all.
This patch reverts the previous change, and makes sure assembler operands are
remapped correctly even though the input operands auto-generated due to
updating operations aren't explicitly used.
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Wed, 18 Feb 2009 21:46:14 +0100 |
parents | aa953cc960b6 |
children |
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/* * Placed into the Public Domain * written by Walter Bright, Digital Mars * www.digitalmars.com */ /* ================================= Win32 ============================ */ #if _WIN32 #include <windows.h> /****************************************** * Enter/exit critical section. */ /* We don't initialize critical sections unless we actually need them. * So keep a linked list of the ones we do use, and in the static destructor * code, walk the list and release them. */ typedef struct D_CRITICAL_SECTION { struct D_CRITICAL_SECTION *next; CRITICAL_SECTION cs; } D_CRITICAL_SECTION; static D_CRITICAL_SECTION *dcs_list; static D_CRITICAL_SECTION critical_section; static volatile int inited; void _d_criticalenter(D_CRITICAL_SECTION *dcs) { if (!dcs->next) { EnterCriticalSection(&critical_section.cs); if (!dcs->next) // if, in the meantime, another thread didn't set it { dcs->next = dcs_list; dcs_list = dcs; InitializeCriticalSection(&dcs->cs); } LeaveCriticalSection(&critical_section.cs); } EnterCriticalSection(&dcs->cs); } void _d_criticalexit(D_CRITICAL_SECTION *dcs) { LeaveCriticalSection(&dcs->cs); } void _STI_critical_init() { if (!inited) { InitializeCriticalSection(&critical_section.cs); dcs_list = &critical_section; inited = 1; } } void _STD_critical_term() { if (inited) { inited = 0; while (dcs_list) { DeleteCriticalSection(&dcs_list->cs); dcs_list = dcs_list->next; } } } #endif /* ================================= linux ============================ */ #if linux || __APPLE__ || __FreeBSD__ || (defined(__SVR4) && defined (__sun)) #include <stdio.h> #include <stdlib.h> #include <pthread.h> #if !linux #define PTHREAD_MUTEX_RECURSIVE_NP PTHREAD_MUTEX_RECURSIVE #endif /****************************************** * Enter/exit critical section. */ /* We don't initialize critical sections unless we actually need them. * So keep a linked list of the ones we do use, and in the static destructor * code, walk the list and release them. */ typedef struct D_CRITICAL_SECTION { struct D_CRITICAL_SECTION *next; pthread_mutex_t cs; } D_CRITICAL_SECTION; static D_CRITICAL_SECTION *dcs_list; static D_CRITICAL_SECTION critical_section; static pthread_mutexattr_t _criticals_attr; void _STI_critical_init(void); void _STD_critical_term(void); void _d_criticalenter(D_CRITICAL_SECTION *dcs) { if (!dcs_list) { _STI_critical_init(); atexit(_STD_critical_term); } //printf("_d_criticalenter(dcs = x%x)\n", dcs); if (!dcs->next) { pthread_mutex_lock(&critical_section.cs); if (!dcs->next) // if, in the meantime, another thread didn't set it { dcs->next = dcs_list; dcs_list = dcs; pthread_mutex_init(&dcs->cs, &_criticals_attr); } pthread_mutex_unlock(&critical_section.cs); } pthread_mutex_lock(&dcs->cs); } void _d_criticalexit(D_CRITICAL_SECTION *dcs) { //printf("_d_criticalexit(dcs = x%x)\n", dcs); pthread_mutex_unlock(&dcs->cs); } void _STI_critical_init() { if (!dcs_list) { //printf("_STI_critical_init()\n"); pthread_mutexattr_init(&_criticals_attr); pthread_mutexattr_settype(&_criticals_attr, PTHREAD_MUTEX_RECURSIVE_NP); // The global critical section doesn't need to be recursive pthread_mutex_init(&critical_section.cs, 0); dcs_list = &critical_section; } } void _STD_critical_term() { if (dcs_list) { //printf("_STI_critical_term()\n"); while (dcs_list) { //printf("\tlooping... %x\n", dcs_list); pthread_mutex_destroy(&dcs_list->cs); dcs_list = dcs_list->next; } } } #endif