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38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
/* LinuxThreads internal data structures */
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/* hacked for use with gstreamer by andy wingo <wingo@pobox.com> */
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#include <bits/local_lim.h> /* PTHREAD_THREADS_MAX */
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#include <sys/types.h> /* _pthread_fastlock */
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#ifndef CURRENT_STACK_FRAME
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#define CURRENT_STACK_FRAME ({ char __csf; &__csf; })
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#endif /* CURRENT_STACK_FRAME */
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#ifndef STACK_SIZE
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#define STACK_SIZE 0x20000 /* 2 M linuxthreads default stack size */
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#endif
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typedef void * pthread_descr;
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/* Global array of thread handles, used for validating a thread id
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and retrieving the corresponding thread descriptor. Also used for
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mapping the available stack segments. */
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#pragma weak __pthread_handles
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extern struct pthread_handle_struct __pthread_handles[PTHREAD_THREADS_MAX];
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struct pthread_handle_struct {
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struct _pthread_fastlock h_lock; /* Fast lock for sychronized access */
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pthread_descr h_descr; /* Thread descriptor or NULL if invalid */
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char * h_bottom; /* Lowest address in the stack thread */
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};
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typedef struct pthread_handle_struct * pthread_handle;
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/* Return the handle corresponding to a thread id */
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static inline pthread_handle thread_handle(pthread_t id)
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{
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return &__pthread_handles[id % PTHREAD_THREADS_MAX];
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}
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