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| author | Dan Albert <danalbert@google.com> | 2015-06-17 11:09:54 -0700 |
|---|---|---|
| committer | Dan Albert <danalbert@google.com> | 2015-06-17 14:15:22 -0700 |
| commit | f378ebf14df0952eae870c9865bab8326aa8f137 (patch) | |
| tree | 31794503eb2a8c64ea5f313b93100f1163afcffb /gcc-4.6/libgomp/task.c | |
| parent | 2c58169824949d3a597d9fa81931e001ef9b1bd0 (diff) | |
| download | toolchain_gcc-f378ebf14df0952eae870c9865bab8326aa8f137.tar.gz toolchain_gcc-f378ebf14df0952eae870c9865bab8326aa8f137.tar.bz2 toolchain_gcc-f378ebf14df0952eae870c9865bab8326aa8f137.zip | |
Delete old versions of GCC.
Change-Id: I710f125d905290e1024cbd67f48299861790c66c
Diffstat (limited to 'gcc-4.6/libgomp/task.c')
| -rw-r--r-- | gcc-4.6/libgomp/task.c | 364 |
1 files changed, 0 insertions, 364 deletions
diff --git a/gcc-4.6/libgomp/task.c b/gcc-4.6/libgomp/task.c deleted file mode 100644 index 95f163d53..000000000 --- a/gcc-4.6/libgomp/task.c +++ /dev/null @@ -1,364 +0,0 @@ -/* Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc. - Contributed by Richard Henderson <rth@redhat.com>. - - This file is part of the GNU OpenMP Library (libgomp). - - Libgomp is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3, or (at your option) - any later version. - - Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS - FOR A PARTICULAR PURPOSE. See the GNU General Public License for - more details. - - Under Section 7 of GPL version 3, you are granted additional - permissions described in the GCC Runtime Library Exception, version - 3.1, as published by the Free Software Foundation. - - You should have received a copy of the GNU General Public License and - a copy of the GCC Runtime Library Exception along with this program; - see the files COPYING3 and COPYING.RUNTIME respectively. If not, see - <http://www.gnu.org/licenses/>. */ - -/* This file handles the maintainence of tasks in response to task - creation and termination. */ - -#include "libgomp.h" -#include <stdlib.h> -#include <string.h> - - -/* Create a new task data structure. */ - -void -gomp_init_task (struct gomp_task *task, struct gomp_task *parent_task, - struct gomp_task_icv *prev_icv) -{ - task->parent = parent_task; - task->icv = *prev_icv; - task->kind = GOMP_TASK_IMPLICIT; - task->in_taskwait = false; - task->in_tied_task = false; - task->children = NULL; - gomp_sem_init (&task->taskwait_sem, 0); -} - -/* Clean up a task, after completing it. */ - -void -gomp_end_task (void) -{ - struct gomp_thread *thr = gomp_thread (); - struct gomp_task *task = thr->task; - - gomp_finish_task (task); - thr->task = task->parent; -} - -static inline void -gomp_clear_parent (struct gomp_task *children) -{ - struct gomp_task *task = children; - - if (task) - do - { - task->parent = NULL; - task = task->next_child; - } - while (task != children); -} - -/* Called when encountering an explicit task directive. If IF_CLAUSE is - false, then we must not delay in executing the task. If UNTIED is true, - then the task may be executed by any member of the team. */ - -void -GOMP_task (void (*fn) (void *), void *data, void (*cpyfn) (void *, void *), - long arg_size, long arg_align, bool if_clause, - unsigned flags __attribute__((unused))) -{ - struct gomp_thread *thr = gomp_thread (); - struct gomp_team *team = thr->ts.team; - -#ifdef HAVE_BROKEN_POSIX_SEMAPHORES - /* If pthread_mutex_* is used for omp_*lock*, then each task must be - tied to one thread all the time. This means UNTIED tasks must be - tied and if CPYFN is non-NULL IF(0) must be forced, as CPYFN - might be running on different thread than FN. */ - if (cpyfn) - if_clause = false; - if (flags & 1) - flags &= ~1; -#endif - - if (!if_clause || team == NULL - || team->task_count > 64 * team->nthreads) - { - struct gomp_task task; - - gomp_init_task (&task, thr->task, gomp_icv (false)); - task.kind = GOMP_TASK_IFFALSE; - if (thr->task) - task.in_tied_task = thr->task->in_tied_task; - thr->task = &task; - if (__builtin_expect (cpyfn != NULL, 0)) - { - char buf[arg_size + arg_align - 1]; - char *arg = (char *) (((uintptr_t) buf + arg_align - 1) - & ~(uintptr_t) (arg_align - 1)); - cpyfn (arg, data); - fn (arg); - } - else - fn (data); - if (task.children) - { - gomp_mutex_lock (&team->task_lock); - gomp_clear_parent (task.children); - gomp_mutex_unlock (&team->task_lock); - } - gomp_end_task (); - } - else - { - struct gomp_task *task; - struct gomp_task *parent = thr->task; - char *arg; - bool do_wake; - - task = gomp_malloc (sizeof (*task) + arg_size + arg_align - 1); - arg = (char *) (((uintptr_t) (task + 1) + arg_align - 1) - & ~(uintptr_t) (arg_align - 1)); - gomp_init_task (task, parent, gomp_icv (false)); - task->kind = GOMP_TASK_IFFALSE; - task->in_tied_task = parent->in_tied_task; - thr->task = task; - if (cpyfn) - cpyfn (arg, data); - else - memcpy (arg, data, arg_size); - thr->task = parent; - task->kind = GOMP_TASK_WAITING; - task->fn = fn; - task->fn_data = arg; - task->in_tied_task = true; - gomp_mutex_lock (&team->task_lock); - if (parent->children) - { - task->next_child = parent->children; - task->prev_child = parent->children->prev_child; - task->next_child->prev_child = task; - task->prev_child->next_child = task; - } - else - { - task->next_child = task; - task->prev_child = task; - } - parent->children = task; - if (team->task_queue) - { - task->next_queue = team->task_queue; - task->prev_queue = team->task_queue->prev_queue; - task->next_queue->prev_queue = task; - task->prev_queue->next_queue = task; - } - else - { - task->next_queue = task; - task->prev_queue = task; - team->task_queue = task; - } - ++team->task_count; - gomp_team_barrier_set_task_pending (&team->barrier); - do_wake = team->task_running_count + !parent->in_tied_task - < team->nthreads; - gomp_mutex_unlock (&team->task_lock); - if (do_wake) - gomp_team_barrier_wake (&team->barrier, 1); - } -} - -void -gomp_barrier_handle_tasks (gomp_barrier_state_t state) -{ - struct gomp_thread *thr = gomp_thread (); - struct gomp_team *team = thr->ts.team; - struct gomp_task *task = thr->task; - struct gomp_task *child_task = NULL; - struct gomp_task *to_free = NULL; - - gomp_mutex_lock (&team->task_lock); - if (gomp_barrier_last_thread (state)) - { - if (team->task_count == 0) - { - gomp_team_barrier_done (&team->barrier, state); - gomp_mutex_unlock (&team->task_lock); - gomp_team_barrier_wake (&team->barrier, 0); - return; - } - gomp_team_barrier_set_waiting_for_tasks (&team->barrier); - } - - while (1) - { - if (team->task_queue != NULL) - { - struct gomp_task *parent; - - child_task = team->task_queue; - parent = child_task->parent; - if (parent && parent->children == child_task) - parent->children = child_task->next_child; - child_task->prev_queue->next_queue = child_task->next_queue; - child_task->next_queue->prev_queue = child_task->prev_queue; - if (child_task->next_queue != child_task) - team->task_queue = child_task->next_queue; - else - team->task_queue = NULL; - child_task->kind = GOMP_TASK_TIED; - team->task_running_count++; - if (team->task_count == team->task_running_count) - gomp_team_barrier_clear_task_pending (&team->barrier); - } - gomp_mutex_unlock (&team->task_lock); - if (to_free) - { - gomp_finish_task (to_free); - free (to_free); - to_free = NULL; - } - if (child_task) - { - thr->task = child_task; - child_task->fn (child_task->fn_data); - thr->task = task; - } - else - return; - gomp_mutex_lock (&team->task_lock); - if (child_task) - { - struct gomp_task *parent = child_task->parent; - if (parent) - { - child_task->prev_child->next_child = child_task->next_child; - child_task->next_child->prev_child = child_task->prev_child; - if (parent->children == child_task) - { - if (child_task->next_child != child_task) - parent->children = child_task->next_child; - else - { - parent->children = NULL; - if (parent->in_taskwait) - gomp_sem_post (&parent->taskwait_sem); - } - } - } - gomp_clear_parent (child_task->children); - to_free = child_task; - child_task = NULL; - team->task_running_count--; - if (--team->task_count == 0 - && gomp_team_barrier_waiting_for_tasks (&team->barrier)) - { - gomp_team_barrier_done (&team->barrier, state); - gomp_mutex_unlock (&team->task_lock); - gomp_team_barrier_wake (&team->barrier, 0); - } - } - } -} - -/* Called when encountering a taskwait directive. */ - -void -GOMP_taskwait (void) -{ - struct gomp_thread *thr = gomp_thread (); - struct gomp_team *team = thr->ts.team; - struct gomp_task *task = thr->task; - struct gomp_task *child_task = NULL; - struct gomp_task *to_free = NULL; - - if (task == NULL || task->children == NULL) - return; - gomp_mutex_lock (&team->task_lock); - while (1) - { - if (task->children == NULL) - { - gomp_mutex_unlock (&team->task_lock); - if (to_free) - { - gomp_finish_task (to_free); - free (to_free); - } - return; - } - if (task->children->kind == GOMP_TASK_WAITING) - { - child_task = task->children; - task->children = child_task->next_child; - child_task->prev_queue->next_queue = child_task->next_queue; - child_task->next_queue->prev_queue = child_task->prev_queue; - if (team->task_queue == child_task) - { - if (child_task->next_queue != child_task) - team->task_queue = child_task->next_queue; - else - team->task_queue = NULL; - } - child_task->kind = GOMP_TASK_TIED; - team->task_running_count++; - if (team->task_count == team->task_running_count) - gomp_team_barrier_clear_task_pending (&team->barrier); - } - else - /* All tasks we are waiting for are already running - in other threads. Wait for them. */ - task->in_taskwait = true; - gomp_mutex_unlock (&team->task_lock); - if (to_free) - { - gomp_finish_task (to_free); - free (to_free); - to_free = NULL; - } - if (child_task) - { - thr->task = child_task; - child_task->fn (child_task->fn_data); - thr->task = task; - } - else - { - gomp_sem_wait (&task->taskwait_sem); - task->in_taskwait = false; - return; - } - gomp_mutex_lock (&team->task_lock); - if (child_task) - { - child_task->prev_child->next_child = child_task->next_child; - child_task->next_child->prev_child = child_task->prev_child; - if (task->children == child_task) - { - if (child_task->next_child != child_task) - task->children = child_task->next_child; - else - task->children = NULL; - } - gomp_clear_parent (child_task->children); - to_free = child_task; - child_task = NULL; - team->task_count--; - team->task_running_count--; - } - } -} |
