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Define front-end/back-end interface functions and structures. 

From-SVN: r14311
This commit is contained in:
Richard Kenner 1997-06-25 16:25:39 -04:00
parent 2024f9e4dc
commit f1a997418e
1 changed files with 61 additions and 22 deletions
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83
gcc/objc/thr.h
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@ -49,38 +49,53 @@ extern int __objc_thread_exit_status; /* Global exit status. */
* Thread safe implementation types and functions.
*/
/* Thread priorities */
#define OBJC_THREAD_INTERACTIVE_PRIORITY 2
#define OBJC_THREAD_BACKGROUND_PRIORITY 1
#define OBJC_THREAD_LOW_PRIORITY 0
/* A thread */
typedef void * objc_thread_t;
/* This structure represents a single mutual exclusion lock. */
struct objc_mutex
{
volatile objc_thread_t owner; /* Id of thread that owns. */
volatile int depth; /* # of acquires. */
void * backend; /* Specific to backend */
};
typedef struct objc_mutex *objc_mutex_t;
/* This structure represents a single condition mutex */
struct objc_condition
{
void * backend; /* Specific to backend */
};
typedef struct objc_condition *objc_condition_t;
/* Frontend mutex functions */
objc_mutex_t objc_mutex_allocate(void);
int objc_mutex_deallocate(objc_mutex_t mutex);
int objc_mutex_lock(objc_mutex_t mutex);
int objc_mutex_unlock(objc_mutex_t mutex);
int objc_mutex_trylock(objc_mutex_t mutex);
int objc_mutex_deallocate(objc_mutex_t mutex);
int objc_mutex_lock(objc_mutex_t mutex);
int objc_mutex_unlock(objc_mutex_t mutex);
int objc_mutex_trylock(objc_mutex_t mutex);
/* Frontend condition mutex functions */
objc_condition_t objc_condition_allocate(void);
int objc_condition_deallocate(objc_condition_t condition);
int objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex);
int objc_condition_signal(objc_condition_t condition);
int objc_condition_broadcast(objc_condition_t condition);
objc_thread_t objc_thread_create(void (*func)(void *arg), void *arg);
void objc_thread_yield(void);
int objc_thread_exit(void);
int objc_thread_set_priority(int priority);
int objc_thread_get_priority(void);
void * objc_thread_get_data(void);
int objc_thread_set_data(void *value);
objc_thread_t objc_thread_id(void);
int objc_condition_deallocate(objc_condition_t condition);
int objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex);
int objc_condition_signal(objc_condition_t condition);
int objc_condition_broadcast(objc_condition_t condition);
/* Frontend thread functions */
objc_thread_t objc_thread_detach(SEL selector, id object, id argument);
int objc_mutex_lock_x(objc_mutex_t mutex, const char *f, int l);
int objc_mutex_unlock_x(objc_mutex_t mutex, const char *f, int l);
void objc_thread_yield(void);
int objc_thread_exit(void);
int objc_thread_set_priority(int priority);
int objc_thread_get_priority(void);
void * objc_thread_get_data(void);
int objc_thread_set_data(void *value);
objc_thread_t objc_thread_id(void);
/*
Use this to set the hook function that will be called when the
@ -97,8 +112,32 @@ int objc_mutex_unlock_x(objc_mutex_t mutex, const char *f, int l);
typedef void (*objc_thread_callback)();
objc_thread_callback objc_set_thread_callback(objc_thread_callback func);
/* For debugging of locks, uncomment these two macros: */
/* #define objc_mutex_lock(x) objc_mutex_lock_x(x, __FILE__, __LINE__) */
/* #define objc_mutex_unlock(x) objc_mutex_unlock_x(x, __FILE__, __LINE__)*/
/* Backend initialization functions */
int __objc_init_thread_system(void);
int __objc_fini_thread_system(void);
/* Backend mutex functions */
int __objc_mutex_allocate(objc_mutex_t mutex);
int __objc_mutex_deallocate(objc_mutex_t mutex);
int __objc_mutex_lock(objc_mutex_t mutex);
int __objc_mutex_trylock(objc_mutex_t mutex);
int __objc_mutex_unlock(objc_mutex_t mutex);
/* Backend condition mutex functions */
int __objc_condition_allocate(objc_condition_t condition);
int __objc_condition_deallocate(objc_condition_t condition);
int __objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex);
int __objc_condition_broadcast(objc_condition_t condition);
int __objc_condition_signal(objc_condition_t condition);
/* Backend thread functions */
objc_thread_t __objc_thread_detach(void (*func)(void *arg), void *arg);
int __objc_thread_set_priority(int priority);
int __objc_thread_get_priority(void);
void __objc_thread_yield(void);
int __objc_thread_exit(void);
objc_thread_t __objc_thread_id(void);
int __objc_thread_set_data(void *value);
void * __objc_thread_get_data(void);
#endif /* not __thread_INCLUDE_GNU */