| // Copyright 2012 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Platform-specific code for FreeBSD goes here. For the POSIX-compatible |
| // parts, the implementation is in platform-posix.cc. |
| |
| #include <pthread.h> |
| #include <semaphore.h> |
| #include <signal.h> |
| #include <stdlib.h> |
| #include <sys/resource.h> |
| #include <sys/time.h> |
| #include <sys/types.h> |
| #include <sys/ucontext.h> |
| |
| #include <sys/fcntl.h> // open |
| #include <sys/mman.h> // mmap & munmap |
| #include <sys/stat.h> // open |
| #include <unistd.h> // getpagesize |
| // If you don't have execinfo.h then you need devel/libexecinfo from ports. |
| #include <errno.h> |
| #include <limits.h> |
| #include <stdarg.h> |
| #include <strings.h> // index |
| |
| #include <cmath> |
| |
| #undef MAP_TYPE |
| |
| #include "src/base/macros.h" |
| #include "src/base/platform/platform-posix-time.h" |
| #include "src/base/platform/platform-posix.h" |
| #include "src/base/platform/platform.h" |
| |
| namespace v8 { |
| namespace base { |
| |
| TimezoneCache* OS::CreateTimezoneCache() { |
| return new PosixDefaultTimezoneCache(); |
| } |
| |
| static unsigned StringToLong(char* buffer) { |
| return static_cast<unsigned>(strtol(buffer, nullptr, 16)); // NOLINT |
| } |
| |
| std::vector<OS::SharedLibraryAddress> OS::GetSharedLibraryAddresses() { |
| std::vector<SharedLibraryAddress> result; |
| static const int MAP_LENGTH = 1024; |
| int fd = open("/proc/self/maps", O_RDONLY); |
| if (fd < 0) return result; |
| while (true) { |
| char addr_buffer[11]; |
| addr_buffer[0] = '0'; |
| addr_buffer[1] = 'x'; |
| addr_buffer[10] = 0; |
| ssize_t bytes_read = read(fd, addr_buffer + 2, 8); |
| if (bytes_read < 8) break; |
| unsigned start = StringToLong(addr_buffer); |
| bytes_read = read(fd, addr_buffer + 2, 1); |
| if (bytes_read < 1) break; |
| if (addr_buffer[2] != '-') break; |
| bytes_read = read(fd, addr_buffer + 2, 8); |
| if (bytes_read < 8) break; |
| unsigned end = StringToLong(addr_buffer); |
| char buffer[MAP_LENGTH]; |
| bytes_read = -1; |
| do { |
| bytes_read++; |
| if (bytes_read >= MAP_LENGTH - 1) break; |
| bytes_read = read(fd, buffer + bytes_read, 1); |
| if (bytes_read < 1) break; |
| } while (buffer[bytes_read] != '\n'); |
| buffer[bytes_read] = 0; |
| // Ignore mappings that are not executable. |
| if (buffer[3] != 'x') continue; |
| char* start_of_path = index(buffer, '/'); |
| // There may be no filename in this line. Skip to next. |
| if (start_of_path == nullptr) continue; |
| buffer[bytes_read] = 0; |
| result.push_back(SharedLibraryAddress(start_of_path, start, end)); |
| } |
| close(fd); |
| return result; |
| } |
| |
| void OS::SignalCodeMovingGC() {} |
| |
| } // namespace base |
| } // namespace v8 |