(deallocate_tsd): Don't take parameter. Adjust caller. Optimize to avoid often unecessary local variable.
(start_thread): Initialize cleanup_jmp_buf element if own thread descriptor.
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0dc44b51cd
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877e51b20f
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@ -108,11 +108,13 @@ __find_in_stack_list (pd)
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/* Deallocate POSIX thread-local-storage. */
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/* Deallocate POSIX thread-local-storage. */
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static void
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static void
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internal_function
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internal_function
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deallocate_tsd (struct pthread *pd)
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deallocate_tsd (void)
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{
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{
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struct pthread *self = THREAD_SELF;
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/* Maybe no data was ever allocated. This happens often so we have
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/* Maybe no data was ever allocated. This happens often so we have
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a flag for this. */
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a flag for this. */
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if (THREAD_GETMEM (pd, specific_used))
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if (THREAD_GETMEM (self, specific_used))
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{
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{
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size_t round;
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size_t round;
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size_t cnt;
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size_t cnt;
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@ -123,13 +125,13 @@ deallocate_tsd (struct pthread *pd)
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size_t idx;
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size_t idx;
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/* So far no new nonzero data entry. */
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/* So far no new nonzero data entry. */
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THREAD_SETMEM (pd, specific_used, false);
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THREAD_SETMEM (self, specific_used, false);
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for (cnt = idx = 0; cnt < PTHREAD_KEY_1STLEVEL_SIZE; ++cnt)
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for (cnt = idx = 0; cnt < PTHREAD_KEY_1STLEVEL_SIZE; ++cnt)
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{
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{
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struct pthread_key_data *level2;
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struct pthread_key_data *level2;
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level2 = THREAD_GETMEM_NC (pd, specific, cnt);
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level2 = THREAD_GETMEM_NC (self, specific, cnt);
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if (level2 != NULL)
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if (level2 != NULL)
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{
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{
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@ -140,50 +142,59 @@ deallocate_tsd (struct pthread *pd)
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{
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{
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void *data = level2[inner].data;
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void *data = level2[inner].data;
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if (data != NULL
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if (data != NULL)
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{
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/* Always clear the data. */
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level2[inner].data = NULL;
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/* Make sure the data corresponds to a valid
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/* Make sure the data corresponds to a valid
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key. This test fails if the key was
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key. This test fails if the key was
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deallocated and also if it was
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deallocated and also if it was
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re-allocated. It is the user's
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re-allocated. It is the user's
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responsibility to free the memory in this
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responsibility to free the memory in this
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case. */
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case. */
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&& (level2[inner].seq
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if (level2[inner].seq
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== __pthread_keys[idx].seq)
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== __pthread_keys[idx].seq
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/* It is not necessary to register a destructor
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/* It is not necessary to register a destructor
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function. */
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function. */
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&& __pthread_keys[idx].destr != NULL)
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&& __pthread_keys[idx].destr != NULL)
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{
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/* Call the user-provided destructor. */
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level2[inner].data = NULL;
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__pthread_keys[idx].destr (data);
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__pthread_keys[idx].destr (data);
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}
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}
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}
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}
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}
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}
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else
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else
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idx += PTHREAD_KEY_1STLEVEL_SIZE;
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idx += PTHREAD_KEY_1STLEVEL_SIZE;
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}
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}
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if (THREAD_GETMEM (self, specific_used) == 0)
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/* No data has been modified. */
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goto just_free;
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}
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}
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while (THREAD_GETMEM (pd, specific_used)
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/* We only repeat the process a fixed number of times. */
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&& ++round < PTHREAD_DESTRUCTOR_ITERATIONS);
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while (__builtin_expect (++round < PTHREAD_DESTRUCTOR_ITERATIONS, 0));
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/* Clear the memory of the first block for reuse. */
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/* Just clear the memory of the first block for reuse. */
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memset (&pd->specific_1stblock, '\0', sizeof (pd->specific_1stblock));
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memset (&THREAD_SELF->specific_1stblock, '\0',
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sizeof (self->specific_1stblock));
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just_free:
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/* Free the memory for the other blocks. */
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/* Free the memory for the other blocks. */
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for (cnt = 1; cnt < PTHREAD_KEY_1STLEVEL_SIZE; ++cnt)
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for (cnt = 1; cnt < PTHREAD_KEY_1STLEVEL_SIZE; ++cnt)
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{
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{
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struct pthread_key_data *level2;
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struct pthread_key_data *level2;
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level2 = THREAD_GETMEM_NC (pd, specific, cnt);
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level2 = THREAD_GETMEM_NC (self, specific, cnt);
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if (level2 != NULL)
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if (level2 != NULL)
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{
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{
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/* The first block is allocated as part of the thread
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/* The first block is allocated as part of the thread
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descriptor. */
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descriptor. */
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free (level2);
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free (level2);
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THREAD_SETMEM_NC (pd, specific, cnt, NULL);
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THREAD_SETMEM_NC (self, specific, cnt, NULL);
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}
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}
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}
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}
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THREAD_SETMEM (pd, specific_used, false);
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THREAD_SETMEM (self, specific_used, false);
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}
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}
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}
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}
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@ -229,9 +240,19 @@ start_thread (void *arg)
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/* This is where the try/finally block should be created. For
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/* This is where the try/finally block should be created. For
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compilers without that support we do use setjmp. */
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compilers without that support we do use setjmp. */
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int not_first_call = setjmp (pd->cancelbuf);
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struct pthread_unwind_buf unwind_buf;
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/* No previous handlers. */
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unwind_buf.priv.data.prev = NULL;
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unwind_buf.priv.data.cleanup = NULL;
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int not_first_call;
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not_first_call = setjmp ((struct __jmp_buf_tag *) unwind_buf.cancel_jmp_buf);
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if (__builtin_expect (! not_first_call, 1))
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if (__builtin_expect (! not_first_call, 1))
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{
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{
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/* Store the new cleanup handler info. */
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THREAD_SETMEM (pd, cleanup_jmp_buf, &unwind_buf);
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/* Run the code the user provided. */
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/* Run the code the user provided. */
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#ifdef CALL_THREAD_FCT
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#ifdef CALL_THREAD_FCT
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THREAD_SETMEM (pd, result, CALL_THREAD_FCT (pd));
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THREAD_SETMEM (pd, result, CALL_THREAD_FCT (pd));
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@ -241,7 +262,7 @@ start_thread (void *arg)
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}
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}
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/* Run the destructor for the thread-local data. */
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/* Run the destructor for the thread-local data. */
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deallocate_tsd (pd);
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deallocate_tsd ();
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/* Clean up any state libc stored in thread-local variables. */
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/* Clean up any state libc stored in thread-local variables. */
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__libc_thread_freeres ();
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__libc_thread_freeres ();
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