| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #include "platform/globals.h" |
| #if defined(TARGET_OS_LINUX) |
| |
| #include "bin/platform.h" |
| |
| #include <signal.h> // NOLINT |
| #include <string.h> // NOLINT |
| #include <unistd.h> // NOLINT |
| |
| |
| namespace dart { |
| namespace bin { |
| |
| bool Platform::Initialize() { |
| // Turn off the signal handler for SIGPIPE as it causes the process |
| // to terminate on writing to a closed pipe. Without the signal |
| // handler error EPIPE is set instead. |
| struct sigaction act; |
| bzero(&act, sizeof(act)); |
| act.sa_handler = SIG_IGN; |
| if (sigaction(SIGPIPE, &act, 0) != 0) { |
| perror("Setting signal handler failed"); |
| return false; |
| } |
| // Unblock SIGCHLD as waiting on spawned child process depends |
| // on successful interception of this signal. |
| sigset_t newset; |
| sigemptyset(&newset); |
| sigaddset(&newset, SIGCHLD); |
| if (sigprocmask(SIG_UNBLOCK, &newset, NULL) != 0) { |
| perror("Unblocking SIGCHLD signal failed"); |
| } |
| return true; |
| } |
| |
| |
| int Platform::NumberOfProcessors() { |
| return sysconf(_SC_NPROCESSORS_ONLN); |
| } |
| |
| |
| const char* Platform::OperatingSystem() { |
| return "linux"; |
| } |
| |
| |
| bool Platform::LocalHostname(char *buffer, intptr_t buffer_length) { |
| return gethostname(buffer, buffer_length) == 0; |
| } |
| |
| |
| char** Platform::Environment(intptr_t* count) { |
| // Using environ directly is only safe as long as we do not |
| // provide access to modifying environment variables. |
| intptr_t i = 0; |
| char** tmp = environ; |
| while (*(tmp++) != NULL) i++; |
| *count = i; |
| char** result = new char*[i]; |
| for (intptr_t current = 0; current < i; current++) { |
| result[current] = environ[current]; |
| } |
| return result; |
| } |
| |
| |
| void Platform::FreeEnvironment(char** env, intptr_t count) { |
| delete[] env; |
| } |
| |
| } // namespace bin |
| } // namespace dart |
| |
| #endif // defined(TARGET_OS_LINUX) |