1879 // C runtime error that has no corresponding DOS error code
1880 const char* s = strerror(errno);
1881 size_t n = strlen(s);
1882 if (n >= len) n = len - 1;
1883 strncpy(buf, s, n);
1884 buf[n] = '\0';
1885 return n;
1886 }
1887
1888 return 0;
1889 }
1890
1891 int os::get_last_error() {
1892 DWORD error = GetLastError();
1893 if (error == 0) {
1894 error = errno;
1895 }
1896 return (int)error;
1897 }
1898
1899 Semaphore::Semaphore(uint value, uint max) {
1900 _semaphore = ::CreateSemaphore(NULL, value, max, NULL);
1901
1902 assert(_semaphore != NULL, err_msg("CreateSemaphore failed: %ld", GetLastError()));
1903 }
1904
1905 Semaphore::~Semaphore() {
1906 if (_semaphore != NULL) {
1907 ::CloseHandle(_semaphore);
1908 }
1909 }
1910
1911 void Semaphore::signal(uint count) {
1912 BOOL ret = ::ReleaseSemaphore(_semaphore, count, NULL);
1913
1914 assert(ret != 0, err_msg("ReleaseSemaphore failed: %d", GetLastError()));
1915 }
1916
1917 void Semaphore::signal() {
1918 signal(1);
1919 }
1920
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1879 // C runtime error that has no corresponding DOS error code
1880 const char* s = strerror(errno);
1881 size_t n = strlen(s);
1882 if (n >= len) n = len - 1;
1883 strncpy(buf, s, n);
1884 buf[n] = '\0';
1885 return n;
1886 }
1887
1888 return 0;
1889 }
1890
1891 int os::get_last_error() {
1892 DWORD error = GetLastError();
1893 if (error == 0) {
1894 error = errno;
1895 }
1896 return (int)error;
1897 }
1898
1899 Semaphore::Semaphore(uint value) {
1900 _semaphore = ::CreateSemaphore(NULL, value, LONG_MAX, NULL);
1901
1902 assert(_semaphore != NULL, err_msg("CreateSemaphore failed: %ld", GetLastError()));
1903 }
1904
1905 Semaphore::~Semaphore() {
1906 if (_semaphore != NULL) {
1907 ::CloseHandle(_semaphore);
1908 }
1909 }
1910
1911 void Semaphore::signal(uint count) {
1912 BOOL ret = ::ReleaseSemaphore(_semaphore, count, NULL);
1913
1914 assert(ret != 0, err_msg("ReleaseSemaphore failed: %d", GetLastError()));
1915 }
1916
1917 void Semaphore::signal() {
1918 signal(1);
1919 }
1920
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