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Diffstat (limited to 'gcc-4.9/libcilkrts/runtime/full_frame.c')
| -rw-r--r-- | gcc-4.9/libcilkrts/runtime/full_frame.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/gcc-4.9/libcilkrts/runtime/full_frame.c b/gcc-4.9/libcilkrts/runtime/full_frame.c new file mode 100644 index 000000000..9ccfd110d --- /dev/null +++ b/gcc-4.9/libcilkrts/runtime/full_frame.c @@ -0,0 +1,181 @@ +/* full_frame.c -*-C++-*- + * + ************************************************************************* + * + * @copyright + * Copyright (C) 2010-2013, Intel Corporation + * All rights reserved. + * + * @copyright + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * @copyright + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY + * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + **************************************************************************/ + +#include "full_frame.h" +#include "stats.h" +#include "os.h" +#include "bug.h" +#include "jmpbuf.h" +#include "frame_malloc.h" + +COMMON_PORTABLE +full_frame *__cilkrts_make_full_frame(__cilkrts_worker *w, + __cilkrts_stack_frame *sf) +{ + full_frame *ff; + + START_INTERVAL(w, INTERVAL_ALLOC_FULL_FRAME) { + ff = (full_frame *)__cilkrts_frame_malloc(w, sizeof(*ff)); + __cilkrts_mutex_init(&ff->lock); + + ff->full_frame_magic_0 = FULL_FRAME_MAGIC_0; + ff->join_counter = 0; + ff->parent = 0; + ff->rightmost_child = 0; + ff->left_sibling = ff->right_sibling = 0; + ff->call_stack = sf; + ff->is_call_child = 0; + ff->simulated_stolen = 0; + ff->children_reducer_map = ff->right_reducer_map = 0; + ff->pending_exception = + ff->child_pending_exception = + ff->right_pending_exception = NULL; + + ff->sync_sp = 0; +#ifdef _WIN32 + ff->exception_sp = 0; + ff->trylevel = (unsigned long)-1; + ff->registration = 0; +#endif + ff->frame_size = 0; + ff->fiber_self = 0; + ff->fiber_child = 0; + + ff->sync_master = 0; + + /*__cilkrts_init_full_frame_sysdep(w, ff);*/ + ff->full_frame_magic_1 = FULL_FRAME_MAGIC_1; + } STOP_INTERVAL(w, INTERVAL_ALLOC_FULL_FRAME); + return ff; +} + +COMMON_PORTABLE void __cilkrts_put_stack(full_frame *ff, + __cilkrts_stack_frame *sf) +{ + /* When suspending frame ff prior to stealing it, __cilkrts_put_stack is + * used to store the stack pointer for eventual sync. When suspending + * frame ff prior to a sync, __cilkrts_put_stack is called to re-establish + * the sync stack pointer, offsetting it by any change in the stack depth + * that occured between the spawn and the sync. + * Although it is not usually meaningful to add two pointers, the value of + * ff->sync_sp at the time of this call is really an integer, not a + * pointer. + */ + ptrdiff_t sync_sp_i = (ptrdiff_t) ff->sync_sp; + char* sp = (char*) __cilkrts_get_sp(sf); + + ff->sync_sp = sp + sync_sp_i; + + DBGPRINTF("%d- __cilkrts_put_stack - adjust (+) sync " + "stack of full frame %p (+sp: %p) to %p\n", + __cilkrts_get_tls_worker()->self, ff, sp, ff->sync_sp); +} + +COMMON_PORTABLE void __cilkrts_take_stack(full_frame *ff, void *sp) +{ + /* When resuming the parent after a steal, __cilkrts_take_stack is used to + * subtract the new stack pointer from the current stack pointer, storing + * the offset in ff->sync_sp. When resuming after a sync, + * __cilkrts_take_stack is used to subtract the new stack pointer from + * itself, leaving ff->sync_sp at zero (null). Although the pointers being + * subtracted are not part of the same contiguous chunk of memory, the + * flat memory model allows us to subtract them and get a useable offset. + */ + ptrdiff_t sync_sp_i = ff->sync_sp - (char*) sp; + + ff->sync_sp = (char *) sync_sp_i; + + DBGPRINTF("%d- __cilkrts_take_stack - adjust (-) sync " + "stack of full frame %p to %p (-sp: %p)\n", + __cilkrts_get_tls_worker()->self, ff, ff->sync_sp, sp); +} + +COMMON_PORTABLE void __cilkrts_adjust_stack(full_frame *ff, size_t size) +{ + /* When resuming the parent after a steal, __cilkrts_take_stack is used to + * subtract the new stack pointer from the current stack pointer, storing + * the offset in ff->sync_sp. When resuming after a sync, + * __cilkrts_take_stack is used to subtract the new stack pointer from + * itself, leaving ff->sync_sp at zero (null). Although the pointers being + * subtracted are not part of the same contiguous chunk of memory, the + * flat memory model allows us to subtract them and get a useable offset. + * + * __cilkrts_adjust_stack() is used to deallocate a Variable Length Array + * by adding it's size to ff->sync_sp. + */ + ff->sync_sp = ff->sync_sp + size; + + DBGPRINTF("%d- __cilkrts_adjust_stack - adjust (+) sync " + "stack of full frame %p to %p (+ size: 0x%x)\n", + __cilkrts_get_tls_worker()->self, ff, ff->sync_sp, size); +} + +COMMON_PORTABLE +void __cilkrts_destroy_full_frame(__cilkrts_worker *w, full_frame *ff) +{ + validate_full_frame(ff); + CILK_ASSERT(ff->children_reducer_map == 0); + CILK_ASSERT(ff->right_reducer_map == 0); + CILK_ASSERT(NULL == ff->pending_exception); + CILK_ASSERT(NULL == ff->child_pending_exception); + CILK_ASSERT(NULL == ff->right_pending_exception); + __cilkrts_mutex_destroy(w, &ff->lock); + __cilkrts_frame_free(w, ff, sizeof(*ff)); +} + +COMMON_PORTABLE void validate_full_frame(full_frame *ff) +{ + /* check the magic numbers, for debugging purposes */ + if (ff->full_frame_magic_0 != FULL_FRAME_MAGIC_0 || + ff->full_frame_magic_1 != FULL_FRAME_MAGIC_1) + abort_because_rts_is_corrupted(); +} + +void __cilkrts_frame_lock(__cilkrts_worker *w, full_frame *ff) +{ + validate_full_frame(ff); + __cilkrts_mutex_lock(w, &ff->lock); +} + +void __cilkrts_frame_unlock(__cilkrts_worker *w, full_frame *ff) +{ + __cilkrts_mutex_unlock(w, &ff->lock); +} + +/* End full_frame.c */ |