| 1 |
/* wether word reads are potentially non-atomic. |
| 2 |
* this is conservatice, likely most arches this runs |
| 3 |
* on have atomic word read/writes. |
| 4 |
*/ |
| 5 |
#ifndef WORDACCESS_UNSAFE |
| 6 |
# if __i386 || __x86_64 |
| 7 |
# define WORDACCESS_UNSAFE 0 |
| 8 |
# else |
| 9 |
# define WORDACCESS_UNSAFE 1 |
| 10 |
# endif |
| 11 |
#endif |
| 12 |
|
| 13 |
///////////////////////////////////////////////////////////////////////////// |
| 14 |
|
| 15 |
#ifdef _WIN32 |
| 16 |
typedef int ssize_t; |
| 17 |
|
| 18 |
#define NTDDI_VERSION NTDDI_WIN2K // needed to get win2000 api calls |
| 19 |
#define _WIN32_WINNT 0x400 |
| 20 |
#include <stdio.h>//D |
| 21 |
#include <fcntl.h> |
| 22 |
#include <io.h> |
| 23 |
#include <winsock2.h> |
| 24 |
#include <process.h> |
| 25 |
#include <windows.h> |
| 26 |
#define sigset_t int |
| 27 |
#define sigfillset(a) |
| 28 |
#define pthread_sigmask(a,b,c) |
| 29 |
#define sigaddset(a,b) |
| 30 |
#define sigemptyset(s) |
| 31 |
#define sigfillset(s) |
| 32 |
|
| 33 |
#define pthread_kill(a,b) |
| 34 |
#define pthread_self() 0 |
| 35 |
|
| 36 |
typedef HANDLE mutex_t; |
| 37 |
#define X_MUTEX_INIT 0 |
| 38 |
#define X_MUTEX_CHECK(mutex) if (!(mutex)) (mutex) = CreateMutex (NULL, FALSE, NULL) |
| 39 |
#define X_LOCK(mutex) WaitForSingleObject ((mutex), INFINITE) |
| 40 |
#define X_UNLOCK(mutex) ReleaseMutex (mutex) |
| 41 |
|
| 42 |
typedef HANDLE cond_t; |
| 43 |
#define X_COND_INIT 0 |
| 44 |
#define X_COND_CHECK(cond) if (!(cond)) (cond) = CreateEvent (NULL, FALSE, FALSE, NULL) |
| 45 |
#define X_COND_SIGNAL(cond) SetEvent (cond) |
| 46 |
#define X_COND_WAIT(cond,mutex) do { SignalObjectAndWait ((mutex), (cond),INFINITE, FALSE); WaitForSingleObject ((mutex), INFINITE); } while (0) |
| 47 |
|
| 48 |
#define ETIMEDOUT 1 |
| 49 |
|
| 50 |
struct timespec { |
| 51 |
unsigned long tv_sec, tv_nsec; |
| 52 |
}; |
| 53 |
|
| 54 |
static int |
| 55 |
X_COND_TIMEDWAIT (mutex_t mutex, cond_t cond, struct timespec to) |
| 56 |
{ |
| 57 |
unsigned long ms = to.tv_nsec / 1000 + to.tv_sec * 1000; |
| 58 |
|
| 59 |
if (SignalObjectAndWait (mutex, cond, ms, FALSE) == WAIT_TIMEOUT) |
| 60 |
return ETIMEDOUT; |
| 61 |
|
| 62 |
if (WaitForSingleObject (mutex, ms) == WAIT_TIMEOUT) |
| 63 |
return ETIMEDOUT; |
| 64 |
|
| 65 |
return 0; |
| 66 |
} |
| 67 |
|
| 68 |
typedef DWORD thread_t; |
| 69 |
#define X_THREAD_PROC(name) DWORD WINAPI name (LPVOID thr_arg) |
| 70 |
#define X_THREAD_ATFORK(a,b,c) |
| 71 |
|
| 72 |
static int |
| 73 |
thread_create (thread_t *tid, LPTHREAD_START_ROUTINE proc, void *arg) |
| 74 |
{ |
| 75 |
*tid = 0; |
| 76 |
CreateThread (0, 4096, proc, arg, 0, tid); |
| 77 |
return !!*tid; |
| 78 |
} |
| 79 |
|
| 80 |
#else |
| 81 |
///////////////////////////////////////////////////////////////////////////// |
| 82 |
|
| 83 |
/* solaris */ |
| 84 |
#define _POSIX_PTHREAD_SEMANTICS 1 |
| 85 |
|
| 86 |
#if __linux && !defined(_GNU_SOURCE) |
| 87 |
# define _GNU_SOURCE |
| 88 |
#endif |
| 89 |
|
| 90 |
/* just in case */ |
| 91 |
#define _REENTRANT 1 |
| 92 |
|
| 93 |
#include <unistd.h> |
| 94 |
#include <fcntl.h> |
| 95 |
#include <signal.h> |
| 96 |
#include <pthread.h> |
| 97 |
|
| 98 |
typedef pthread_mutex_t mutex_t; |
| 99 |
#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
| 100 |
# define X_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
| 101 |
#else |
| 102 |
# define X_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
| 103 |
#endif |
| 104 |
#define X_LOCK(mutex) pthread_mutex_lock (&(mutex)) |
| 105 |
#define X_UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) |
| 106 |
|
| 107 |
typedef pthread_cond_t cond_t; |
| 108 |
#define X_COND_INIT PTHREAD_COND_INITIALIZER |
| 109 |
#define X_COND_SIGNAL(cond) pthread_cond_signal (&(cond)) |
| 110 |
#define X_COND_WAIT(cond,mutex) pthread_cond_wait (&(cond), &(mutex)) |
| 111 |
#define X_COND_TIMEDWAIT(cond,mutex,to) pthread_cond_timedwait (&(cond), &(mutex), &(to)) |
| 112 |
|
| 113 |
typedef pthread_t thread_t; |
| 114 |
#define X_THREAD_PROC(name) static void *name (void *thr_arg) |
| 115 |
#define X_THREAD_ATFORK(prepare,parent,child) pthread_atfork (prepare, parent, child) |
| 116 |
|
| 117 |
static int |
| 118 |
thread_create (thread_t *tid, void *(*proc)(void *), void *arg) |
| 119 |
{ |
| 120 |
int retval; |
| 121 |
sigset_t fullsigset, oldsigset; |
| 122 |
pthread_attr_t attr; |
| 123 |
|
| 124 |
pthread_attr_init (&attr); |
| 125 |
pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
| 126 |
#ifdef PTHREAD_SCOPE_PROCESS |
| 127 |
pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
| 128 |
#endif |
| 129 |
|
| 130 |
sigfillset (&fullsigset); |
| 131 |
|
| 132 |
pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset); |
| 133 |
retval = pthread_create (tid, &attr, proc, arg) == 0; |
| 134 |
pthread_sigmask (SIG_SETMASK, &oldsigset, 0); |
| 135 |
|
| 136 |
return retval; |
| 137 |
} |
| 138 |
|
| 139 |
#endif |
| 140 |
|
| 141 |
|
| 142 |
|
