diff options
Diffstat (limited to 'create.c')
| -rw-r--r-- | create.c | 146 |
1 files changed, 144 insertions, 2 deletions
@@ -6,6 +6,149 @@ * thread. */ +#include "pthread.h" +#include "implement.h" + +/* + * Code contributed by John E. Bossom <JEB>. + */ + +int +pthread_create (pthread_t * tid, + const pthread_attr_t * attr, + void *(*start) (void *), + void *arg) + /* + * ------------------------------------------------------ + * DOCPUBLIC + * This function creates a thread running the start function, + * passing it the parameter value, 'arg'. + * + * PARAMETERS + * tid + * pointer to an instance of pthread_t + * + * attr + * optional pointer to an instance of pthread_attr_t + * + * start + * pointer to the starting routine for the new thread + * + * arg + * optional parameter passed to 'start' + * + * + * DESCRIPTION + * This function creates a thread running the start function, + * passing it the parameter value, 'arg'. The 'attr' + * argument specifies optional creation attributes. + * The thread is identity of the new thread is returned + * as 'tid' + * + * RESULTS + * 0 successfully created thread, + * EINVAL attr invalid, + * EAGAIN insufficient resources. + * + * ------------------------------------------------------ + */ +{ + pthread_t thread; + int result = EAGAIN; + int run = TRUE; + ThreadParms *parms; + long stackSize; + + if ((thread = (pthread_t) calloc (1, sizeof (*thread))) == + NULL) + { + goto FAIL0; + } + thread->cancelEvent = + CreateEvent ( + 0, + (int) TRUE, /* manualReset */ + (int) FALSE, /* setSignaled */ + NULL); + + if (thread->cancelEvent == NULL) + { + goto FAIL0; + } + + if ((parms = (ThreadParms *) malloc (sizeof (*parms))) == + NULL) + { + goto FAIL0; + } + + parms->tid = thread; + parms->start = start; + parms->arg = arg; + + if (attr != NULL && *attr != NULL) + { + stackSize = (*attr)->stacksize; + thread->detachState = (*attr)->detachstate; + + } + else + { + /* + * Default stackSize + */ + stackSize = 0; + } + + thread->state = run + ? PThreadStateInitial + : PThreadStateSuspended; + + thread->keys = NULL; + thread->threadH = (HANDLE) + _beginthreadex ( + (void *) NULL, /* No security info */ + (unsigned) stackSize, /* default stack size */ + (unsigned (__stdcall *) (void *)) threadStart, + parms, + (unsigned) run ? 0 : CREATE_SUSPENDED, + (unsigned *) &(thread->thread)); + + result = (thread->threadH != 0) ? 0 : EAGAIN; + + /* + * Fall Through Intentionally + */ + + /* + * ------------ + * Failure Code + * ------------ + */ + +FAIL0: + if (result != 0) + { + + threadDestroy (thread); + thread = NULL; + + if (parms != NULL) + { + free (parms); + } + } + *tid = thread; + + return (result); + +} /* pthread_create */ + +/* </JEB> */ + + +#if 0 /* Pre Bossom */ + #include <errno.h> #include <windows.h> @@ -146,5 +289,4 @@ pthread_create(pthread_t *thread, return ret; } - - +#endif /* Pre Bossom */ |