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/cvs/IO-AIO/xthread.h
Revision: 1.3
Committed: Sun Jul 8 11:05:36 2007 UTC (17 years, 5 months ago) by root
Content type: text/plain
Branch: MAIN
Changes since 1.2: +0 -36 lines
Log Message:
*** empty log message ***

File Contents

# Content
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