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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include "src/core/lib/iomgr/closure.h"
#include <assert.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include "src/core/lib/profiling/timers.h"
#ifndef NDEBUG
grpc_tracer_flag grpc_trace_closure = GRPC_TRACER_INITIALIZER(false, "closure");
#endif
#ifndef NDEBUG
grpc_closure *grpc_closure_init(const char *file, int line,
grpc_closure *closure, grpc_iomgr_cb_func cb,
void *cb_arg,
grpc_closure_scheduler *scheduler) {
#else
grpc_closure *grpc_closure_init(grpc_closure *closure, grpc_iomgr_cb_func cb,
void *cb_arg,
grpc_closure_scheduler *scheduler) {
#endif
closure->cb = cb;
closure->cb_arg = cb_arg;
closure->scheduler = scheduler;
#ifndef NDEBUG
closure->scheduled = false;
closure->file_initiated = NULL;
closure->line_initiated = 0;
closure->run = false;
closure->file_created = file;
closure->line_created = line;
#endif
return closure;
}
void grpc_closure_list_init(grpc_closure_list *closure_list) {
closure_list->head = closure_list->tail = NULL;
}
bool grpc_closure_list_append(grpc_closure_list *closure_list,
grpc_closure *closure, grpc_error *error) {
if (closure == NULL) {
GRPC_ERROR_UNREF(error);
return false;
}
closure->error_data.error = error;
closure->next_data.next = NULL;
bool was_empty = (closure_list->head == NULL);
if (was_empty) {
closure_list->head = closure;
} else {
closure_list->tail->next_data.next = closure;
}
closure_list->tail = closure;
return was_empty;
}
void grpc_closure_list_fail_all(grpc_closure_list *list,
grpc_error *forced_failure) {
for (grpc_closure *c = list->head; c != NULL; c = c->next_data.next) {
if (c->error_data.error == GRPC_ERROR_NONE) {
c->error_data.error = GRPC_ERROR_REF(forced_failure);
}
}
GRPC_ERROR_UNREF(forced_failure);
}
bool grpc_closure_list_empty(grpc_closure_list closure_list) {
return closure_list.head == NULL;
}
void grpc_closure_list_move(grpc_closure_list *src, grpc_closure_list *dst) {
if (src->head == NULL) {
return;
}
if (dst->head == NULL) {
*dst = *src;
} else {
dst->tail->next_data.next = src->head;
dst->tail = src->tail;
}
src->head = src->tail = NULL;
}
typedef struct {
grpc_iomgr_cb_func cb;
void *cb_arg;
grpc_closure wrapper;
} wrapped_closure;
static void closure_wrapper(grpc_exec_ctx *exec_ctx, void *arg,
grpc_error *error) {
wrapped_closure *wc = (wrapped_closure *)arg;
grpc_iomgr_cb_func cb = wc->cb;
void *cb_arg = wc->cb_arg;
gpr_free(wc);
cb(exec_ctx, cb_arg, error);
}
#ifndef NDEBUG
grpc_closure *grpc_closure_create(const char *file, int line,
grpc_iomgr_cb_func cb, void *cb_arg,
grpc_closure_scheduler *scheduler) {
#else
grpc_closure *grpc_closure_create(grpc_iomgr_cb_func cb, void *cb_arg,
grpc_closure_scheduler *scheduler) {
#endif
wrapped_closure *wc = (wrapped_closure *)gpr_malloc(sizeof(*wc));
wc->cb = cb;
wc->cb_arg = cb_arg;
#ifndef NDEBUG
grpc_closure_init(file, line, &wc->wrapper, closure_wrapper, wc, scheduler);
#else
grpc_closure_init(&wc->wrapper, closure_wrapper, wc, scheduler);
#endif
return &wc->wrapper;
}
#ifndef NDEBUG
void grpc_closure_run(const char *file, int line, grpc_exec_ctx *exec_ctx,
grpc_closure *c, grpc_error *error) {
#else
void grpc_closure_run(grpc_exec_ctx *exec_ctx, grpc_closure *c,
grpc_error *error) {
#endif
GPR_TIMER_BEGIN("grpc_closure_run", 0);
if (c != NULL) {
#ifndef NDEBUG
c->file_initiated = file;
c->line_initiated = line;
c->run = true;
#endif
assert(c->cb);
c->scheduler->vtable->run(exec_ctx, c, error);
} else {
GRPC_ERROR_UNREF(error);
}
GPR_TIMER_END("grpc_closure_run", 0);
}
#ifndef NDEBUG
void grpc_closure_sched(const char *file, int line, grpc_exec_ctx *exec_ctx,
grpc_closure *c, grpc_error *error) {
#else
void grpc_closure_sched(grpc_exec_ctx *exec_ctx, grpc_closure *c,
grpc_error *error) {
#endif
GPR_TIMER_BEGIN("grpc_closure_sched", 0);
if (c != NULL) {
#ifndef NDEBUG
if (c->scheduled) {
gpr_log(GPR_ERROR,
"Closure already scheduled. (closure: %p, created: [%s:%d], "
"previously scheduled at: [%s: %d] run?: %s",
c, c->file_created, c->line_created, c->file_initiated,
c->line_initiated, c->run ? "true" : "false");
abort();
}
c->scheduled = true;
c->file_initiated = file;
c->line_initiated = line;
c->run = false;
#endif
assert(c->cb);
c->scheduler->vtable->sched(exec_ctx, c, error);
} else {
GRPC_ERROR_UNREF(error);
}
GPR_TIMER_END("grpc_closure_sched", 0);
}
#ifndef NDEBUG
void grpc_closure_list_sched(const char *file, int line,
grpc_exec_ctx *exec_ctx, grpc_closure_list *list) {
#else
void grpc_closure_list_sched(grpc_exec_ctx *exec_ctx, grpc_closure_list *list) {
#endif
grpc_closure *c = list->head;
while (c != NULL) {
grpc_closure *next = c->next_data.next;
#ifndef NDEBUG
if (c->scheduled) {
gpr_log(GPR_ERROR,
"Closure already scheduled. (closure: %p, created: [%s:%d], "
"previously scheduled at: [%s: %d] run?: %s",
c, c->file_created, c->line_created, c->file_initiated,
c->line_initiated, c->run ? "true" : "false");
abort();
}
c->scheduled = true;
c->file_initiated = file;
c->line_initiated = line;
c->run = false;
#endif
assert(c->cb);
c->scheduler->vtable->sched(exec_ctx, c, c->error_data.error);
c = next;
}
list->head = list->tail = NULL;
}
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