source: python/vendor/Python-2.6.5/Python/thread_solaris.h

#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include </usr/include/thread.h>
#undef _POSIX_THREADS


/*
 * Initialization.
 */
static void PyThread__init_thread(void)
{
}

/*
 * Thread support.
 */
struct func_arg {
        void (*func)(void *);
        void *arg;
};

static void *
new_func(void *funcarg)
{
        void (*func)(void *);
        void *arg;

        func = ((struct func_arg *) funcarg)->func;
        arg = ((struct func_arg *) funcarg)->arg;
        free(funcarg);
        (*func)(arg);
        return 0;
}


long
PyThread_start_new_thread(void (*func)(void *), void *arg)
{
        thread_t tid;
        struct func_arg *funcarg;

        dprintf(("PyThread_start_new_thread called\n"));
        if (!initialized)
                PyThread_init_thread();
        funcarg = (struct func_arg *) malloc(sizeof(struct func_arg));
        funcarg->func = func;
        funcarg->arg = arg;
        if (thr_create(0, 0, new_func, funcarg,
                       THR_DETACHED | THR_NEW_LWP, &tid)) {
                perror("thr_create");
                free((void *) funcarg);
                return -1;
        }
        return tid;
}

long
PyThread_get_thread_ident(void)
{
        if (!initialized)
                PyThread_init_thread();
        return thr_self();
}

static void 
do_PyThread_exit_thread(int no_cleanup)
{
        dprintf(("PyThread_exit_thread called\n"));
        if (!initialized)
                if (no_cleanup)
                        _exit(0);
                else
                        exit(0);
        thr_exit(0);
}

void 
PyThread_exit_thread(void)
{
        do_PyThread_exit_thread(0);
}

void 
PyThread__exit_thread(void)
{
        do_PyThread_exit_thread(1);
}

#ifndef NO_EXIT_PROG
static void 
do_PyThread_exit_prog(int status, int no_cleanup)
{
        dprintf(("PyThread_exit_prog(%d) called\n", status));
        if (!initialized)
                if (no_cleanup)
                        _exit(status);
                else
                        exit(status);
        if (no_cleanup)
                _exit(status);
        else
                exit(status);
}

void 
PyThread_exit_prog(int status)
{
        do_PyThread_exit_prog(status, 0);
}

void 
PyThread__exit_prog(int status)
{
        do_PyThread_exit_prog(status, 1);
}
#endif /* NO_EXIT_PROG */

/*
 * Lock support.
 */
PyThread_type_lock 
PyThread_allocate_lock(void)
{
        mutex_t *lock;

        dprintf(("PyThread_allocate_lock called\n"));
        if (!initialized)
                PyThread_init_thread();

        lock = (mutex_t *) malloc(sizeof(mutex_t));
        if (mutex_init(lock, USYNC_THREAD, 0)) {
                perror("mutex_init");
                free((void *) lock);
                lock = 0;
        }
        dprintf(("PyThread_allocate_lock() -> %p\n", lock));
        return (PyThread_type_lock) lock;
}

void 
PyThread_free_lock(PyThread_type_lock lock)
{
        dprintf(("PyThread_free_lock(%p) called\n", lock));
        mutex_destroy((mutex_t *) lock);
        free((void *) lock);
}

int 
PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
{
        int success;

        dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
        if (waitflag)
                success = mutex_lock((mutex_t *) lock);
        else
                success = mutex_trylock((mutex_t *) lock);
        if (success < 0)
                perror(waitflag ? "mutex_lock" : "mutex_trylock");
        else
                success = !success; /* solaris does it the other way round */
        dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
        return success;
}

void 
PyThread_release_lock(PyThread_type_lock lock)
{
        dprintf(("PyThread_release_lock(%p) called\n", lock));
        if (mutex_unlock((mutex_t *) lock))
                perror("mutex_unlock");
}