Move threads.c to a separate source dir

This will eventually serve to build a static lib of common wrapper methods,
such as threads, mutexes, atomics, etc.

1 files changed, 0 insertions, 531 deletions

diff --git a/Alc/threads.c b/Alc/threads.c
deleted file mode 100644
index 06036685..00000000
--- a/Alc/threads.c
+++ /dev/null
@@ -1,531 +0,0 @@
-/**
- * OpenAL cross platform audio library
- * Copyright (C) 1999-2007 by authors.
- * This library is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU Library General Public
- *  License as published by the Free Software Foundation; either
- *  version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- *  Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the
- *  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- *  Boston, MA  02111-1307, USA.
- * Or go to http://www.gnu.org/copyleft/lgpl.html
- */
-
-#include "config.h"
-
-#include "threads.h"
-
-#include <stdlib.h>
-#include <errno.h>
-
-#include "alMain.h"
-#include "alThunk.h"
-
-
-extern inline althrd_t althrd_current(void);
-extern inline int althrd_equal(althrd_t thr0, althrd_t thr1);
-extern inline void althrd_exit(int res);
-extern inline void althrd_yield(void);
-
-extern inline int almtx_lock(almtx_t *mtx);
-extern inline int almtx_unlock(almtx_t *mtx);
-extern inline int almtx_trylock(almtx_t *mtx);
-
-extern inline void *altss_get(altss_t tss_id);
-extern inline int altss_set(altss_t tss_id, void *val);
-
-
-#define THREAD_STACK_SIZE (1*1024*1024) /* 1MB */
-
-#ifdef _WIN32
-
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#include <mmsystem.h>
-
-
-void althrd_setname(althrd_t thr, const char *name)
-{
-#if defined(_MSC_VER)
-#define MS_VC_EXCEPTION 0x406D1388
-#pragma pack(push,8)
-    struct {
-        DWORD dwType;     // Must be 0x1000.
-        LPCSTR szName;    // Pointer to name (in user addr space).
-        DWORD dwThreadID; // Thread ID (-1=caller thread).
-        DWORD dwFlags;    // Reserved for future use, must be zero.
-    } info;
-#pragma pack(pop)
-    info.dwType = 0x1000;
-    info.szName = name;
-    info.dwThreadID = thr;
-    info.dwFlags = 0;
-
-    __try {
-        RaiseException(MS_VC_EXCEPTION, 0, sizeof(info)/sizeof(ULONG_PTR), (ULONG_PTR*)&info);
-    }
-    __except(EXCEPTION_CONTINUE_EXECUTION) {
-    }
-#undef MS_VC_EXCEPTION
-#else
-    TRACE("Can't set thread %04lx name to \"%s\"\n", thr, name);
-#endif
-}
-
-
-static UIntMap ThrdIdHandle = UINTMAP_STATIC_INITIALIZE;
-
-static void NTAPI althrd_callback(void* UNUSED(handle), DWORD reason, void* UNUSED(reserved))
-{
-    if(reason == DLL_PROCESS_DETACH)
-        ResetUIntMap(&ThrdIdHandle);
-}
-#ifdef _MSC_VER
-#pragma section(".CRT$XLC",read)
-__declspec(allocate(".CRT$XLC")) PIMAGE_TLS_CALLBACK althrd_callback_ = althrd_callback;
-#elif defined(__GNUC__)
-PIMAGE_TLS_CALLBACK althrd_callback_ __attribute__((section(".CRT$XLC"))) = althrd_callback;
-#else
-PIMAGE_TLS_CALLBACK althrd_callback_ = althrd_callback;
-#endif
-
-
-typedef struct thread_cntr {
-    althrd_start_t func;
-    void *arg;
-} thread_cntr;
-
-static DWORD WINAPI althrd_starter(void *arg)
-{
-    thread_cntr cntr;
-    memcpy(&cntr, arg, sizeof(cntr));
-    free(arg);
-
-    return (DWORD)((*cntr.func)(cntr.arg));
-}
-
-
-int althrd_create(althrd_t *thr, althrd_start_t func, void *arg)
-{
-    thread_cntr *cntr;
-    DWORD thrid;
-    HANDLE hdl;
-
-    cntr = malloc(sizeof(*cntr));
-    if(!cntr) return althrd_nomem;
-
-    cntr->func = func;
-    cntr->arg = arg;
-
-    hdl = CreateThread(NULL, THREAD_STACK_SIZE, althrd_starter, cntr, 0, &thrid);
-    if(!hdl)
-    {
-        free(cntr);
-        return althrd_error;
-    }
-    InsertUIntMapEntry(&ThrdIdHandle, thrid, hdl);
-
-    *thr = thrid;
-    return althrd_success;
-}
-
-int althrd_detach(althrd_t thr)
-{
-    HANDLE hdl = RemoveUIntMapKey(&ThrdIdHandle, thr);
-    if(!hdl) return althrd_error;
-
-    CloseHandle(hdl);
-    return althrd_success;
-}
-
-int althrd_join(althrd_t thr, int *res)
-{
-    DWORD code;
-
-    HANDLE hdl = RemoveUIntMapKey(&ThrdIdHandle, thr);
-    if(!hdl) return althrd_error;
-
-    WaitForSingleObject(hdl, INFINITE);
-    GetExitCodeThread(hdl, &code);
-    CloseHandle(hdl);
-
-    *res = (int)code;
-    return althrd_success;
-}
-
-int althrd_sleep(const struct timespec *ts, struct timespec* UNUSED(rem))
-{
-    DWORD msec;
-
-    if(ts->tv_sec < 0 || ts->tv_sec >= (0x7fffffff / 1000) ||
-       ts->tv_nsec < 0 || ts->tv_nsec >= 1000000000)
-        return -2;
-
-    msec  = (DWORD)(ts->tv_sec * 1000);
-    msec += (DWORD)((ts->tv_nsec+999999) / 1000000);
-    Sleep(msec);
-
-    return 0;
-}
-
-
-int almtx_init(almtx_t *mtx, int type)
-{
-    if(!mtx) return althrd_error;
-    type &= ~(almtx_recursive|almtx_timed);
-    if(type != almtx_plain)
-        return althrd_error;
-
-    InitializeCriticalSection(mtx);
-    return althrd_success;
-}
-
-void almtx_destroy(almtx_t *mtx)
-{
-    DeleteCriticalSection(mtx);
-}
-
-int almtx_timedlock(almtx_t *mtx, const struct timespec *ts)
-{
-    int ret;
-
-    if(!mtx || !ts)
-        return althrd_error;
-
-    while((ret=almtx_trylock(mtx)) == althrd_busy)
-    {
-        struct timespec now;
-
-        if(ts->tv_sec < 0 || ts->tv_nsec < 0 || ts->tv_nsec >= 1000000000 ||
-           altimespec_get(&now, AL_TIME_UTC) != AL_TIME_UTC)
-            return althrd_error;
-        if(now.tv_sec > ts->tv_sec || (now.tv_sec == ts->tv_sec && now.tv_nsec >= ts->tv_nsec))
-            return althrd_timedout;
-
-        althrd_yield();
-    }
-
-    return ret;
-}
-
-
-/* An associative map of uint:void* pairs. The key is the TLS index (given by
- * TlsAlloc), and the value is the altss_dtor_t callback. When a thread exits,
- * we iterate over the TLS indices for their thread-local value and call the
- * destructor function with it if they're both not NULL. To avoid using
- * DllMain, a PIMAGE_TLS_CALLBACK function pointer is placed in a ".CRT$XLx"
- * section (where x is a character A to Z) which will be called by the CRT.
- */
-static UIntMap TlsDestructors = UINTMAP_STATIC_INITIALIZE;
-
-static void NTAPI altss_callback(void* UNUSED(handle), DWORD reason, void* UNUSED(reserved))
-{
-    ALsizei i;
-
-    if(reason == DLL_PROCESS_DETACH)
-    {
-        ResetUIntMap(&TlsDestructors);
-        return;
-    }
-    if(reason != DLL_THREAD_DETACH)
-        return;
-
-    LockUIntMapRead(&TlsDestructors);
-    for(i = 0;i < TlsDestructors.size;i++)
-    {
-        void *ptr = altss_get(TlsDestructors.array[i].key);
-        altss_dtor_t callback = (altss_dtor_t)TlsDestructors.array[i].value;
-        if(ptr && callback)
-            callback(ptr);
-    }
-    UnlockUIntMapRead(&TlsDestructors);
-}
-#ifdef _MSC_VER
-#pragma section(".CRT$XLB",read)
-__declspec(allocate(".CRT$XLB")) PIMAGE_TLS_CALLBACK altss_callback_ = altss_callback;
-#elif defined(__GNUC__)
-PIMAGE_TLS_CALLBACK altss_callback_ __attribute__((section(".CRT$XLB"))) = altss_callback;
-#else
-#warning "No TLS callback support, thread-local contexts may leak references on poorly written applications."
-PIMAGE_TLS_CALLBACK altss_callback_ = altss_callback;
-#endif
-
-int altss_create(altss_t *tss_id, altss_dtor_t callback)
-{
-    DWORD key = TlsAlloc();
-    if(key == TLS_OUT_OF_INDEXES)
-        return althrd_error;
-
-    *tss_id = key;
-    if(callback != NULL)
-        InsertUIntMapEntry(&TlsDestructors, key, callback);
-    return althrd_success;
-}
-
-void altss_delete(altss_t tss_id)
-{
-    RemoveUIntMapKey(&TlsDestructors, tss_id);
-    TlsFree(tss_id);
-}
-
-
-int altimespec_get(struct timespec *ts, int base)
-{
-    if(base == AL_TIME_UTC)
-    {
-        union {
-            FILETIME ftime;
-            ULARGE_INTEGER ulint;
-        } systime;
-        GetSystemTimeAsFileTime(&systime.ftime);
-        /* FILETIME is in 100-nanosecond units, or 1/10th of a microsecond. */
-        ts->tv_sec = systime.ulint.QuadPart/10000000;
-        ts->tv_nsec = (systime.ulint.QuadPart%10000000) * 100;
-        return base;
-    }
-
-    return 0;
-}
-
-
-void alcall_once(alonce_flag *once, void (*callback)(void))
-{
-    LONG ret;
-    while((ret=InterlockedExchange(once, 1)) == 1)
-        althrd_yield();
-    if(ret == 0)
-        (*callback)();
-    InterlockedExchange(once, 2);
-}
-
-#else
-
-#include <sys/time.h>
-#include <unistd.h>
-#include <pthread.h>
-#ifdef HAVE_PTHREAD_NP_H
-#include <pthread_np.h>
-#endif
-
-
-extern inline int althrd_sleep(const struct timespec *ts, struct timespec *rem);
-extern inline void alcall_once(alonce_flag *once, void (*callback)(void));
-
-
-void althrd_setname(althrd_t thr, const char *name)
-{
-#if defined(HAVE_PTHREAD_SETNAME_NP)
-#if defined(__GNUC__)
-    if(pthread_setname_np(thr, name) != 0)
-#elif defined(__APPLE__)
-    if(!althrd_equal(thr, althrd_current())
-        WARN("Can't set thread name \"%s\" on non-current thread");
-    else if(pthread_setname_np(name) != 0)
-#endif
-        WARN("Failed to set thread name to \"%s\": %s\n", name, strerror(errno));
-#elif defined(HAVE_PTHREAD_SET_NAME_NP)
-    pthread_set_name_np(thr, name);
-#else
-    TRACE("Can't set thread name to \"%s\"\n", name);
-#endif
-}
-
-
-typedef struct thread_cntr {
-    althrd_start_t func;
-    void *arg;
-} thread_cntr;
-
-static void *althrd_starter(void *arg)
-{
-    thread_cntr cntr;
-    memcpy(&cntr, arg, sizeof(cntr));
-    free(arg);
-
-    return (void*)(intptr_t)((*cntr.func)(cntr.arg));
-}
-
-
-int althrd_create(althrd_t *thr, althrd_start_t func, void *arg)
-{
-    thread_cntr *cntr;
-    pthread_attr_t attr;
-
-    cntr = malloc(sizeof(*cntr));
-    if(!cntr) return althrd_nomem;
-
-    if(pthread_attr_init(&attr) != 0)
-    {
-        free(cntr);
-        return althrd_error;
-    }
-    if(pthread_attr_setstacksize(&attr, THREAD_STACK_SIZE) != 0)
-    {
-        pthread_attr_destroy(&attr);
-        free(cntr);
-        return althrd_error;
-    }
-
-    cntr->func = func;
-    cntr->arg = arg;
-    if(pthread_create(thr, &attr, althrd_starter, cntr) != 0)
-    {
-        pthread_attr_destroy(&attr);
-        free(cntr);
-        return althrd_error;
-    }
-    pthread_attr_destroy(&attr);
-
-    return althrd_success;
-}
-
-int althrd_detach(althrd_t thr)
-{
-    if(pthread_detach(thr) != 0)
-        return althrd_error;
-    return althrd_success;
-}
-
-int althrd_join(althrd_t thr, int *res)
-{
-    void *code;
-
-    if(!res) return althrd_error;
-
-    if(pthread_join(thr, &code) != 0)
-        return althrd_error;
-    *res = (int)(intptr_t)code;
-    return althrd_success;
-}
-
-
-int almtx_init(almtx_t *mtx, int type)
-{
-    int ret;
-
-    if(!mtx) return althrd_error;
-    if((type&~(almtx_recursive|almtx_timed)) != 0)
-        return althrd_error;
-
-    type &= ~almtx_timed;
-    if(type == almtx_plain)
-        ret = pthread_mutex_init(mtx, NULL);
-    else
-    {
-        pthread_mutexattr_t attr;
-
-        ret = pthread_mutexattr_init(&attr);
-        if(ret) return althrd_error;
-
-        if(type == almtx_recursive)
-        {
-            ret = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
-#ifdef HAVE_PTHREAD_MUTEXATTR_SETKIND_NP
-            if(ret != 0)
-                ret = pthread_mutexattr_setkind_np(&attr, PTHREAD_MUTEX_RECURSIVE);
-#endif
-        }
-        else
-            ret = 1;
-        if(ret == 0)
-            ret = pthread_mutex_init(mtx, &attr);
-        pthread_mutexattr_destroy(&attr);
-    }
-    return ret ? althrd_error : althrd_success;
-}
-
-void almtx_destroy(almtx_t *mtx)
-{
-    pthread_mutex_destroy(mtx);
-}
-
-int almtx_timedlock(almtx_t *mtx, const struct timespec *ts)
-{
-    int ret;
-
-#ifdef HAVE_PTHREAD_MUTEX_TIMEDLOCK
-    ret = pthread_mutex_timedlock(mtx, ts);
-    switch(ret)
-    {
-        case 0: return althrd_success;
-        case ETIMEDOUT: return althrd_timedout;
-        case EBUSY: return althrd_busy;
-    }
-    return althrd_error;
-#else
-    if(!mtx || !ts)
-        return althrd_error;
-
-    while((ret=almtx_trylock(mtx)) == althrd_busy)
-    {
-        struct timespec now;
-
-        if(ts->tv_sec < 0 || ts->tv_nsec < 0 || ts->tv_nsec >= 1000000000 ||
-           altimespec_get(&now, AL_TIME_UTC) != AL_TIME_UTC)
-            return althrd_error;
-        if(now.tv_sec > ts->tv_sec || (now.tv_sec == ts->tv_sec && now.tv_nsec >= ts->tv_nsec))
-            return althrd_timedout;
-
-        althrd_yield();
-    }
-
-    return ret;
-#endif
-}
-
-
-int altss_create(altss_t *tss_id, altss_dtor_t callback)
-{
-    if(pthread_key_create(tss_id, callback) != 0)
-        return althrd_error;
-    return althrd_success;
-}
-
-void altss_delete(altss_t tss_id)
-{
-    pthread_key_delete(tss_id);
-}
-
-
-int altimespec_get(struct timespec *ts, int base)
-{
-    if(base == AL_TIME_UTC)
-    {
-        int ret;
-#if _POSIX_TIMERS > 0
-        ret = clock_gettime(CLOCK_REALTIME, ts);
-        if(ret == 0) return base;
-#else /* _POSIX_TIMERS > 0 */
-        struct timeval tv;
-        ret = gettimeofday(&tv, NULL);
-        if(ret == 0)
-        {
-            ts->tv_sec = tv.tv_sec;
-            ts->tv_nsec = tv.tv_usec * 1000;
-            return base;
-        }
-#endif
-    }
-
-    return 0;
-}
-
-#endif
-
-
-void al_nssleep(time_t sec, long nsec)
-{
-    struct timespec ts, rem;
-    ts.tv_sec = sec;
-    ts.tv_nsec = nsec;
-
-    while(althrd_sleep(&ts, &rem) == -1)
-        ts = rem;
-}