/* 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 */