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/*
* implement.h
*
* Implementation specific (non API) stuff.
*/
#ifndef _IMPLEMENT_H
#define _IMPLEMENT_H
/* Use internally to initialise const ints and thread admin array sizes. */
#define _PTHREAD_MAX_THREADS 128
#define _PTHREAD_HASH_INDEX(x) (((ULONG) x) % PTHREAD_THREADS_MAX)
enum {
_PTHREAD_NEW,
_PTHREAD_INUSE,
_PTHREAD_EXITED,
_PTHREAD_REUSE
};
#define _PTHREAD_VALID(T) \
((T) != NULL \
&& ((T)->ptstatus == _PTHREAD_NEW \
|| (T)->ptstatus == _PTHREAD_INUSE))
/* Handler execution flags. */
#define _PTHREAD_HANDLER_NOEXECUTE 0
#define _PTHREAD_HANDLER_EXECUTE 1
/* Special value to mark attribute objects as valid. */
#define _PTHREAD_ATTR_VALID 0xC0FFEE
/* General description of a handler function on a stack. */
typedef struct _pthread_handler_node _pthread_handler_node_t;
struct _pthread_handler_node {
_pthread_handler_node_t * next;
void (* routine)(void *);
void * arg;
};
/* Stores a thread call routine and argument. */
typedef struct {
unsigned (*routine)(void *);
void * arg;
} _pthread_call_t;
/* Macro to compute the address of a given handler stack. */
#define _PTHREAD_STACK(stack) \
((_pthread_handler_node_t **) &(pthread_self()->cleanupstack) + stack);
/* Macro to compute the table index of a thread entry from it's entry
address. */
#define _PTHREAD_THREADS_TABLE_INDEX(this) \
((_pthread_threads_table_t *) this - \
(_pthread_threads_table_t *) _pthread_threads_threads_table)
/* Macro to compute the address of a per-thread mutex lock. */
#define _PTHREAD_THREAD_MUTEX(this) \
(&_pthread_threads_mutex_table[_PTHREAD_THREADS_TABLE_INDEX(this)])
/* An element in the thread table. */
typedef struct _pthread _pthread_t;
/* Keep the old typedef until we've updated all source files. */
typedef struct _pthread _pthread_threads_thread_t;
/* Related constants */
struct _pthread {
HANDLE win32handle;
int ptstatus; /* _PTHREAD_EXITED
_PTHREAD_REUSABLE */
pthread_attr_t attr;
_pthread_call_t call;
int cancel_pending;
int cancelstate; /* PTHREAD_CANCEL_DISABLE
PTHREAD_CANCEL_ENABLE */
int canceltype; /* PTHREAD_CANCEL_ASYNCHRONOUS
PTHREAD_CANCEL_DEFERRED */
void ** joinvalueptr;
int join_count;
/* These must be kept in this order and together. */
_pthread_handler_node_t * cleanupstack;
_pthread_handler_node_t * destructorstack;
_pthread_handler_node_t * forkpreparestack;
_pthread_handler_node_t * forkparentstack;
_pthread_handler_node_t * forkchildstack;
};
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/* Generic handler push and pop routines. */
int _pthread_handler_push(int stack,
int poporder,
void (*routine)(void *),
void *arg);
void _pthread_handler_pop(int stack,
int execute);
void _pthread_handler_pop_all(int stack,
int execute);
int _pthread_destructor_push(void (*routine)(void *),
pthread_key_t key);
void _pthread_destructor_pop(pthread_key_t key);
void _pthread_destructor_pop_all();
/* Primitives to manage threads table entries. */
int _pthread_new_thread(pthread_t * thread);
int _pthread_delete_thread(pthread_t thread);
/* Thread cleanup. */
void _pthread_vacuum(void);
void _pthread_exit(pthread_t thread, void * value, int return_code);
#ifdef __cplusplus
}
#endif /* __cplusplus */
/* Global declared dll.c */
extern DWORD _pthread_threadID_TlsIndex;
/* Global data declared in global.c */
extern pthread_mutex_t _pthread_table_mutex;
extern DWORD _pthread_threads_count;
/* An array of struct _pthread */
extern _pthread_t _pthread_virgins[];
/* Index to the next available previously unused struct _pthread */
extern int _pthread_virgin_next;
/* An array of pointers to struct _pthread */
extern pthread_t _pthread_reuse[];
/* Index to the first available reusable pthread_t. */
extern int _pthread_reuse_top;
/* An array of pointers to struct _pthread indexed by hashing
the Win32 handle. */
extern pthread_t _pthread_win32handle_map[];
/* Per thread mutex locks. */
extern pthread_mutex_t _pthread_threads_mutex_table[];
#endif /* _IMPLEMENT_H */
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