#include "EXTERN.h"
#include "perl.h"
+#ifdef USE_THREADS
+
+typedef void (*emx_startroutine)(void *);
+typedef void* (*pthreads_startroutine)(void *);
+
+enum pthreads_state {
+ pthreads_st_none = 0,
+ pthreads_st_run,
+ pthreads_st_exited,
+ pthreads_st_detached,
+ pthreads_st_waited,
+};
+const char *pthreads_states[] = {
+ "uninit",
+ "running",
+ "exited",
+ "detached",
+ "waited for",
+};
+
+typedef struct {
+ void *status;
+ pthread_cond_t cond;
+ enum pthreads_state state;
+} thread_join_t;
+
+thread_join_t *thread_join_data;
+int thread_join_count;
+pthread_mutex_t start_thread_mutex;
+
+int
+pthread_join(pthread_t tid, void **status)
+{
+ MUTEX_LOCK(&start_thread_mutex);
+ switch (thread_join_data[tid].state) {
+ case pthreads_st_exited:
+ thread_join_data[tid].state = pthreads_st_none; /* Ready to reuse */
+ MUTEX_UNLOCK(&start_thread_mutex);
+ *status = thread_join_data[tid].status;
+ break;
+ case pthreads_st_waited:
+ MUTEX_UNLOCK(&start_thread_mutex);
+ croak("join with a thread with a waiter");
+ break;
+ case pthreads_st_run:
+ thread_join_data[tid].state = pthreads_st_waited;
+ COND_INIT(&thread_join_data[tid].cond);
+ MUTEX_UNLOCK(&start_thread_mutex);
+ COND_WAIT(&thread_join_data[tid].cond, NULL);
+ COND_DESTROY(&thread_join_data[tid].cond);
+ thread_join_data[tid].state = pthreads_st_none; /* Ready to reuse */
+ *status = thread_join_data[tid].status;
+ break;
+ default:
+ MUTEX_UNLOCK(&start_thread_mutex);
+ croak("join: unknown thread state: '%s'",
+ pthreads_states[thread_join_data[tid].state]);
+ break;
+ }
+ return 0;
+}
+
+void
+pthread_startit(void *arg)
+{
+ /* Thread is already started, we need to transfer control only */
+ pthreads_startroutine start_routine = *((pthreads_startroutine*)arg);
+ int tid = pthread_self();
+ void *retval;
+
+ arg = ((void**)arg)[1];
+ if (tid >= thread_join_count) {
+ int oc = thread_join_count;
+
+ thread_join_count = tid + 5 + tid/5;
+ if (thread_join_data) {
+ Renew(thread_join_data, thread_join_count, thread_join_t);
+ Zero(thread_join_data + oc, thread_join_count - oc, thread_join_t);
+ } else {
+ Newz(1323, thread_join_data, thread_join_count, thread_join_t);
+ }
+ }
+ if (thread_join_data[tid].state != pthreads_st_none)
+ croak("attempt to reuse thread id %i", tid);
+ thread_join_data[tid].state = pthreads_st_run;
+ /* Now that we copied/updated the guys, we may release the caller... */
+ MUTEX_UNLOCK(&start_thread_mutex);
+ thread_join_data[tid].status = (*start_routine)(arg);
+ switch (thread_join_data[tid].state) {
+ case pthreads_st_waited:
+ COND_SIGNAL(&thread_join_data[tid].cond);
+ break;
+ default:
+ thread_join_data[tid].state = pthreads_st_exited;
+ break;
+ }
+}
+
+int
+pthread_create(pthread_t *tid, const pthread_attr_t *attr,
+ void *(*start_routine)(void*), void *arg)
+{
+ void *args[2];
+
+ args[0] = (void*)start_routine;
+ args[1] = arg;
+
+ MUTEX_LOCK(&start_thread_mutex);
+ *tid = _beginthread(pthread_startit, /*stack*/ NULL,
+ /*stacksize*/ 10*1024*1024, (void*)args);
+ MUTEX_LOCK(&start_thread_mutex);
+ MUTEX_UNLOCK(&start_thread_mutex);
+ return *tid ? 0 : EINVAL;
+}
+
+int
+pthread_detach(pthread_t tid)
+{
+ MUTEX_LOCK(&start_thread_mutex);
+ switch (thread_join_data[tid].state) {
+ case pthreads_st_waited:
+ MUTEX_UNLOCK(&start_thread_mutex);
+ croak("detach on a thread with a waiter");
+ break;
+ case pthreads_st_run:
+ thread_join_data[tid].state = pthreads_st_detached;
+ MUTEX_UNLOCK(&start_thread_mutex);
+ break;
+ default:
+ MUTEX_UNLOCK(&start_thread_mutex);
+ croak("detach: unknown thread state: '%s'",
+ pthreads_states[thread_join_data[tid].state]);
+ break;
+ }
+ return 0;
+}
+
+/* This is a very bastardized version: */
+int
+os2_cond_wait(pthread_cond_t *c, pthread_mutex_t *m)
+{
+ int rc;
+ if ((rc = DosResetEventSem(*c,&na)) && (rc != ERROR_ALREADY_RESET))
+ croak("panic: COND_WAIT-reset: rc=%i", rc);
+ if (m) MUTEX_UNLOCK(m);
+ if (CheckOSError(DosWaitEventSem(*c,SEM_INDEFINITE_WAIT)))
+ croak("panic: COND_WAIT: rc=%i", rc);
+ if (m) MUTEX_LOCK(m);
+}
+#endif
+
/*****************************************************************************/
/* 2.1 would not resolve symbols on demand, and has no ExtLIBPATH. */
static PFN ExtFCN[2]; /* Labeled by ord below. */
register SV **mark;
register SV **sp;
{
+ dTHR;
register char **a;
char *tmps = NULL;
int rc;
PerlIO *res;
SV *sv;
- if (pipe(p) < 0)
- return Nullfp;
/* `this' is what we use in the parent, `that' in the child. */
this = (*mode == 'w');
that = !this;
taint_env();
taint_proper("Insecure %s%s", "EXEC");
}
+ if (pipe(p) < 0)
+ return Nullfp;
/* Now we need to spawn the child. */
newfd = dup(*mode == 'r'); /* Preserve std* */
if (p[that] != (*mode == 'r')) {
if (sh_path[i] == '\\') sh_path[i] = '/';
}
}
+ MUTEX_INIT(&start_thread_mutex);
}
#undef tmpnam
/* This code was contributed by Rocco Caputo. */
int
-my_flock(int handle, int op)
+my_flock(int handle, int o)
{
FILELOCK rNull, rFull;
ULONG timeout, handle_type, flag_word;
use_my = 1;
}
if (!(_emx_env & 0x200) || !use_my)
- return flock(handle, op); /* Delegate to EMX. */
+ return flock(handle, o); /* Delegate to EMX. */
// is this a file?
if ((DosQueryHType(handle, &handle_type, &flag_word) != 0) ||
rNull.lOffset = rNull.lRange = rFull.lOffset = 0;
rFull.lRange = 0x7FFFFFFF;
// set timeout for blocking
- timeout = ((blocking = !(op & LOCK_NB))) ? 100 : 1;
+ timeout = ((blocking = !(o & LOCK_NB))) ? 100 : 1;
// shared or exclusive?
- shared = (op & LOCK_SH) ? 1 : 0;
+ shared = (o & LOCK_SH) ? 1 : 0;
// do not block the unlock
- if (op & (LOCK_UN | LOCK_SH | LOCK_EX)) {
+ if (o & (LOCK_UN | LOCK_SH | LOCK_EX)) {
rc = DosSetFileLocks(handle, &rFull, &rNull, timeout, shared);
switch (rc) {
case 0:
}
}
// lock may block
- if (op & (LOCK_SH | LOCK_EX)) {
+ if (o & (LOCK_SH | LOCK_EX)) {
// for blocking operations
for (;;) {
rc =
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