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Diffstat (limited to 'fluent-bit/lib/librdkafka-2.1.0/src/rdwin32.h')
| -rw-r--r-- | fluent-bit/lib/librdkafka-2.1.0/src/rdwin32.h | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/fluent-bit/lib/librdkafka-2.1.0/src/rdwin32.h b/fluent-bit/lib/librdkafka-2.1.0/src/rdwin32.h new file mode 100644 index 000000000..73edd41d6 --- /dev/null +++ b/fluent-bit/lib/librdkafka-2.1.0/src/rdwin32.h @@ -0,0 +1,382 @@ +/* + * librdkafka - Apache Kafka C library + * + * Copyright (c) 2012-2015 Magnus Edenhill + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * Win32 (Visual Studio) support + */ +#ifndef _RDWIN32_H_ +#define _RDWIN32_H_ + +#include <stdlib.h> +#include <inttypes.h> +#include <sys/types.h> +#include <time.h> +#include <assert.h> + +#define WIN32_MEAN_AND_LEAN +#include <winsock2.h> /* for sockets + struct timeval */ +#include <io.h> +#include <fcntl.h> + + +/** + * Types + */ +#ifndef _SSIZE_T_DEFINED +#define _SSIZE_T_DEFINED +typedef SSIZE_T ssize_t; +#endif +typedef int socklen_t; + +struct iovec { + void *iov_base; + size_t iov_len; +}; + +struct msghdr { + struct iovec *msg_iov; + int msg_iovlen; +}; + + +/** + * Annotations, attributes, optimizers + */ +#ifndef likely +#define likely(x) x +#endif +#ifndef unlikely +#define unlikely(x) x +#endif + +#define RD_UNUSED +#define RD_INLINE __inline +#define RD_WARN_UNUSED_RESULT +#define RD_NORETURN __declspec(noreturn) +#define RD_IS_CONSTANT(p) (0) +#ifdef _MSC_VER +#define RD_TLS __declspec(thread) +#elif defined(__MINGW32__) +#define RD_TLS __thread +#else +#error Unknown Windows compiler, cannot set RD_TLS (thread-local-storage attribute) +#endif + + +/** + * Allocation + */ +#define rd_alloca(N) _alloca(N) + + +/** + * Strings, formatting, printf, .. + */ + +/* size_t and ssize_t format strings */ +#define PRIusz "Iu" +#define PRIdsz "Id" + +#ifndef RD_FORMAT +#define RD_FORMAT(...) +#endif + +static RD_UNUSED RD_INLINE int +rd_vsnprintf(char *str, size_t size, const char *format, va_list ap) { + int cnt = -1; + + if (size != 0) + cnt = _vsnprintf_s(str, size, _TRUNCATE, format, ap); + if (cnt == -1) + cnt = _vscprintf(format, ap); + + return cnt; +} + +static RD_UNUSED RD_INLINE int +rd_snprintf(char *str, size_t size, const char *format, ...) { + int cnt; + va_list ap; + + va_start(ap, format); + cnt = rd_vsnprintf(str, size, format, ap); + va_end(ap); + + return cnt; +} + + +#define rd_strcasecmp(A, B) _stricmp(A, B) +#define rd_strncasecmp(A, B, N) _strnicmp(A, B, N) +/* There is a StrStrIA() but it requires extra linking, so use our own + * implementation instead. */ +#define rd_strcasestr(HAYSTACK, NEEDLE) _rd_strcasestr(HAYSTACK, NEEDLE) + + + +/** + * Errors + */ + +/* MSVC: + * This is the correct way to set errno on Windows, + * but it is still pointless due to different errnos in + * in different runtimes: + * https://social.msdn.microsoft.com/Forums/vstudio/en-US/b4500c0d-1b69-40c7-9ef5-08da1025b5bf/setting-errno-from-within-a-dll?forum=vclanguage/ + * errno is thus highly deprecated, and buggy, on Windows + * when using librdkafka as a dynamically loaded DLL. */ +#define rd_set_errno(err) _set_errno((err)) + +static RD_INLINE RD_UNUSED const char *rd_strerror(int err) { + static RD_TLS char ret[128]; + + strerror_s(ret, sizeof(ret) - 1, err); + return ret; +} + +/** + * @brief strerror() for Win32 API errors as returned by GetLastError() et.al. + */ +static RD_UNUSED char * +rd_strerror_w32(DWORD errcode, char *dst, size_t dstsize) { + char *t; + FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | + FORMAT_MESSAGE_IGNORE_INSERTS, + NULL, errcode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), + (LPSTR)dst, (DWORD)dstsize - 1, NULL); + /* Remove newlines */ + while ((t = strchr(dst, (int)'\r')) || (t = strchr(dst, (int)'\n'))) + *t = (char)'.'; + return dst; +} + + +/** + * Atomics + */ +#ifndef __cplusplus +#include "rdatomic.h" +#endif + + +/** + * Misc + */ + +/** + * Microsecond sleep. + * 'retry': if true, retry if sleep is interrupted (because of signal) + */ +#define rd_usleep(usec, terminate) Sleep((usec) / 1000) + + +/** + * @brief gettimeofday() for win32 + */ +static RD_UNUSED int rd_gettimeofday(struct timeval *tv, struct timezone *tz) { + SYSTEMTIME st; + FILETIME ft; + ULARGE_INTEGER d; + + GetSystemTime(&st); + SystemTimeToFileTime(&st, &ft); + d.HighPart = ft.dwHighDateTime; + d.LowPart = ft.dwLowDateTime; + tv->tv_sec = (long)((d.QuadPart - 116444736000000000llu) / 10000000L); + tv->tv_usec = (long)(st.wMilliseconds * 1000); + + return 0; +} + + +#define rd_assert(EXPR) assert(EXPR) + + +static RD_INLINE RD_UNUSED const char *rd_getenv(const char *env, + const char *def) { + static RD_TLS char tmp[512]; + DWORD r; + r = GetEnvironmentVariableA(env, tmp, sizeof(tmp)); + if (r == 0 || r > sizeof(tmp)) + return def; + return tmp; +} + + +/** + * Empty struct initializer + */ +#define RD_ZERO_INIT \ + { 0 } + +#ifndef __cplusplus +/** + * Sockets, IO + */ + +/** @brief Socket type */ +typedef SOCKET rd_socket_t; + +/** @brief Socket API error return value */ +#define RD_SOCKET_ERROR SOCKET_ERROR + +/** @brief Last socket error */ +#define rd_socket_errno WSAGetLastError() + +/** @brief String representation of socket error */ +static RD_UNUSED const char *rd_socket_strerror(int err) { + static RD_TLS char buf[256]; + rd_strerror_w32(err, buf, sizeof(buf)); + return buf; +} + +/** @brief WSAPoll() struct type */ +typedef WSAPOLLFD rd_pollfd_t; + +/** @brief poll(2) */ +#define rd_socket_poll(POLLFD, FDCNT, TIMEOUT_MS) \ + WSAPoll(POLLFD, FDCNT, TIMEOUT_MS) + + +/** + * @brief Set socket to non-blocking + * @returns 0 on success or -1 on failure (see rd_kafka_rd_socket_errno) + */ +static RD_UNUSED int rd_fd_set_nonblocking(rd_socket_t fd) { + u_long on = 1; + if (ioctlsocket(fd, FIONBIO, &on) == SOCKET_ERROR) + return (int)WSAGetLastError(); + return 0; +} + +/** + * @brief Create non-blocking pipe + * @returns 0 on success or errno on failure + */ +static RD_UNUSED int rd_pipe_nonblocking(rd_socket_t *fds) { + /* On windows, the "pipe" will be a tcp connection. + * This is to allow WSAPoll to be used to poll pipe events */ + + SOCKET listen_s = INVALID_SOCKET; + SOCKET accept_s = INVALID_SOCKET; + SOCKET connect_s = INVALID_SOCKET; + + struct sockaddr_in listen_addr; + struct sockaddr_in connect_addr; + socklen_t sock_len = 0; + int bufsz; + + /* Create listen socket */ + listen_s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); + if (listen_s == INVALID_SOCKET) + goto err; + + listen_addr.sin_family = AF_INET; + listen_addr.sin_addr.s_addr = ntohl(INADDR_LOOPBACK); + listen_addr.sin_port = 0; + if (bind(listen_s, (struct sockaddr *)&listen_addr, + sizeof(listen_addr)) != 0) + goto err; + + sock_len = sizeof(connect_addr); + if (getsockname(listen_s, (struct sockaddr *)&connect_addr, + &sock_len) != 0) + goto err; + + if (listen(listen_s, 1) != 0) + goto err; + + /* Create connection socket */ + connect_s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); + if (connect_s == INVALID_SOCKET) + goto err; + + if (connect(connect_s, (struct sockaddr *)&connect_addr, + sizeof(connect_addr)) == SOCKET_ERROR) + goto err; + + /* Wait for incoming connection */ + accept_s = accept(listen_s, NULL, NULL); + if (accept_s == SOCKET_ERROR) + goto err; + + /* Done with listening */ + closesocket(listen_s); + + if (rd_fd_set_nonblocking(accept_s) != 0) + goto err; + + if (rd_fd_set_nonblocking(connect_s) != 0) + goto err; + + /* Minimize buffer sizes to avoid a large number + * of signaling bytes to accumulate when + * io-signalled queue is not being served for a while. */ + bufsz = 100; + setsockopt(accept_s, SOL_SOCKET, SO_SNDBUF, (const char *)&bufsz, + sizeof(bufsz)); + bufsz = 100; + setsockopt(accept_s, SOL_SOCKET, SO_RCVBUF, (const char *)&bufsz, + sizeof(bufsz)); + bufsz = 100; + setsockopt(connect_s, SOL_SOCKET, SO_SNDBUF, (const char *)&bufsz, + sizeof(bufsz)); + bufsz = 100; + setsockopt(connect_s, SOL_SOCKET, SO_RCVBUF, (const char *)&bufsz, + sizeof(bufsz)); + + /* Store resulting sockets. + * They are bidirectional, so it does not matter which is read or + * write side of pipe. */ + fds[0] = accept_s; + fds[1] = connect_s; + return 0; + +err: + if (listen_s != INVALID_SOCKET) + closesocket(listen_s); + if (accept_s != INVALID_SOCKET) + closesocket(accept_s); + if (connect_s != INVALID_SOCKET) + closesocket(connect_s); + return -1; +} + +/* Socket IO */ +#define rd_socket_read(fd, buf, sz) recv(fd, buf, sz, 0) +#define rd_socket_write(fd, buf, sz) send(fd, buf, sz, 0) +#define rd_socket_close(fd) closesocket(fd) + +/* File IO */ +#define rd_write(fd, buf, sz) _write(fd, buf, sz) +#define rd_open(path, flags, mode) _open(path, flags, mode) +#define rd_close(fd) _close(fd) + +#endif /* !__cplusplus*/ + +#endif /* _RDWIN32_H_ */ |