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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 <grpc/support/port_platform.h>
#include <string>
#ifdef GPR_POSIX_SUBPROCESS
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <sys/wait.h>
#include <unistd.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include "src/core/lib/gprpp/memory.h"
#include "src/core/lib/gprpp/strerror.h"
#include "test/core/util/subprocess.h"
struct gpr_subprocess {
int pid;
bool joined;
};
const char* gpr_subprocess_binary_extension() { return ""; }
gpr_subprocess* gpr_subprocess_create(int argc, const char** argv) {
gpr_subprocess* r;
int pid;
char** exec_args;
pid = fork();
if (pid == -1) {
return nullptr;
} else if (pid == 0) {
exec_args = static_cast<char**>(
gpr_malloc((static_cast<size_t>(argc) + 1) * sizeof(char*)));
memcpy(exec_args, argv, static_cast<size_t>(argc) * sizeof(char*));
exec_args[argc] = nullptr;
execv(exec_args[0], exec_args);
/* if we reach here, an error has occurred */
gpr_log(GPR_ERROR, "execv '%s' failed: %s", exec_args[0],
grpc_core::StrError(errno).c_str());
_exit(1);
} else {
r = grpc_core::Zalloc<gpr_subprocess>();
r->pid = pid;
return r;
}
}
void gpr_subprocess_destroy(gpr_subprocess* p) {
if (!p->joined) {
kill(p->pid, SIGKILL);
gpr_subprocess_join(p);
}
gpr_free(p);
}
int gpr_subprocess_join(gpr_subprocess* p) {
int status;
retry:
if (waitpid(p->pid, &status, 0) == -1) {
if (errno == EINTR) {
goto retry;
}
gpr_log(GPR_ERROR, "waitpid failed for pid %d: %s", p->pid,
grpc_core::StrError(errno).c_str());
return -1;
}
p->joined = true;
return status;
}
void gpr_subprocess_interrupt(gpr_subprocess* p) {
if (!p->joined) {
kill(p->pid, SIGINT);
}
}
int gpr_subprocess_get_process_id(gpr_subprocess* p) { return p->pid; }
#endif /* GPR_POSIX_SUBPROCESS */
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