mirror of https://gitee.com/bigwinds/arangodb
299 lines
8.6 KiB
C
299 lines
8.6 KiB
C
////////////////////////////////////////////////////////////////////////////////
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/// @brief High-Performance Database Framework made by triagens
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2014 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Copyright 2014, ArangoDB GmbH, Cologne, Germany
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/// @author Copyright 2011-2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGODB_BASICS_C_COMMON_H
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#define ARANGODB_BASICS_C_COMMON_H 1
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// -----------------------------------------------------------------------------
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// --SECTION-- configuration options
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// -----------------------------------------------------------------------------
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#define TRI_WITHIN_COMMON 1
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#include "BasicsC/operating-system.h"
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#ifdef _WIN32
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#include "BasicsC/local-configuration-win.h"
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#else
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#include "BasicsC/local-configuration.h"
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#endif
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#include "BasicsC/application-exit.h"
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#include "build.h"
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#ifdef _DEBUG
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#define TRI_VERSION_FULL TRI_VERSION " [" TRI_PLATFORM "-DEBUG]"
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#else
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#define TRI_VERSION_FULL TRI_VERSION " [" TRI_PLATFORM "]"
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#endif
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#undef TRI_WITHIN_COMMON
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// -----------------------------------------------------------------------------
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// --SECTION-- C header files
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// -----------------------------------------------------------------------------
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <math.h>
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#include <stdarg.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#ifdef TRI_HAVE_PROCESS_H
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#include <process.h>
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#endif
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#ifdef TRI_HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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#ifdef TRI_HAVE_STDBOOL_H
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#include <stdbool.h>
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#endif
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#ifdef TRI_HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef TRI_HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#include <sys/stat.h>
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#include <sys/types.h>
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#ifdef TRI_HAVE_SYS_RESOURCE_H
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#include <sys/resource.h>
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#endif
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#ifdef TRI_HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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// .............................................................................
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// The problem we have for visual studio is that if we include WinSock2.h here
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// it may conflict later in some other source file. The conflict arises when
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// windows.h is included BEFORE WinSock2.h -- this is a visual studio issue. For
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// now be VERY careful to ensure that if you need windows.h, then you include
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// this file AFTER common.h.
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// .............................................................................
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#ifdef TRI_HAVE_WINSOCK2_H
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#include <WinSock2.h>
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typedef long suseconds_t;
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#endif
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// -----------------------------------------------------------------------------
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// --SECTION-- basic triAGENS headers
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// -----------------------------------------------------------------------------
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#define TRI_WITHIN_COMMON 1
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#include "BasicsC/voc-errors.h"
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#include "BasicsC/error.h"
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#include "BasicsC/debugging.h"
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#include "BasicsC/memory.h"
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#include "BasicsC/mimetypes.h"
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#include "BasicsC/structures.h"
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#undef TRI_WITHIN_COMMON
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// -----------------------------------------------------------------------------
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// --SECTION-- basic compiler stuff
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// -----------------------------------------------------------------------------
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#define TRI_WITHIN_COMMON 1
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#include "BasicsC/system-compiler.h"
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#include "BasicsC/system-functions.h"
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#undef TRI_WITHIN_COMMON
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// -----------------------------------------------------------------------------
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// --SECTION-- low level helpers
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief const cast for C
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////////////////////////////////////////////////////////////////////////////////
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static inline void* CONST_CAST (void const* ptr) {
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union { void* p; void const* c; } cnv;
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cnv.c = ptr;
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return cnv.p;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief incrementing a uint64_t modulo a number with wraparound
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////////////////////////////////////////////////////////////////////////////////
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static inline uint64_t TRI_IncModU64(uint64_t i, uint64_t len) {
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// Note that the dummy variable gives the compiler a (good) chance to
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// use a conditional move instruction instead of a branch. This actually
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// works on modern gcc.
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uint64_t dummy;
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dummy = (++i) - len;
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return i < len ? i : dummy;
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}
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static inline uint64_t TRI_DecModU64(uint64_t i, uint64_t len) {
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if ((i--) != 0) {
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return i;
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}
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return len-1;
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}
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// The following two possibilities are equivalent, but seem to produce
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// a branch instruction in the assembler code rather than a conditional move:
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#if 0
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static inline uint64_t TRI_IncModU64(uint64_t i, uint64_t len) {
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if ((++i) == len) {
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return 0;
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}
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return i;
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}
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#endif
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#if 0
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static inline uint64_t TRI_IncModU64(uint64_t i, uint64_t len) {
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return (++i) == len ? 0 : i;
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}
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#endif
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////////////////////////////////////////////////////////////////////////////////
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/// @brief a wrapper for assert()
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///
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/// This wrapper maps TRI_ASSERT() to (void) 0 for non-maintainers.
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/// It maps TRI_ASSERT() to assert() when TRI_ENABLE_MAINTAINER_MODE is set
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////////////////////////////////////////////////////////////////////////////////
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#ifdef TRI_ENABLE_MAINTAINER_MODE
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#if HAVE_BACKTRACE
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#include <execinfo.h>
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#ifdef __cplusplus
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#define TRI_USE_DEMANGLING
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#include <cxxabi.h>
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#endif
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#endif
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static inline void _backtrace(void)
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{
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#if HAVE_BACKTRACE
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void *stack_frames[50];
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size_t size, i;
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char **strings;
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size = backtrace(stack_frames, sizeof(stack_frames) / sizeof(void*));
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strings = backtrace_symbols(stack_frames, size);
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for (i = 0; i < size; i++) {
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if (strings != NULL) {
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#ifdef TRI_USE_DEMANGLING
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char *mangled_name = nullptr, *offset_begin = nullptr, *offset_end = nullptr;
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// find parantheses and +address offset surrounding mangled name
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for (char *p = strings[i]; *p; ++p) {
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if (*p == '(') {
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mangled_name = p;
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}
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else if (*p == '+') {
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offset_begin = p;
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}
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else if (*p == ')') {
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offset_end = p;
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break;
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}
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}
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// if the line could be processed, attempt to demangle the symbol
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if (mangled_name && offset_begin && offset_end &&
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mangled_name < offset_begin) {
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*mangled_name++ = '\0';
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*offset_begin++ = '\0';
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*offset_end++ = '\0';
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int status = 0;
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char * demangled_name = abi::__cxa_demangle(mangled_name, 0, 0, &status);
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if (status == 0) {
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fprintf(stderr, "%s %s\n", strings[i], demangled_name);
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}
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else {
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fprintf(stderr, "%s\n", strings[i]);
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}
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free(demangled_name);
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}
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else
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#endif
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{
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fprintf(stderr, "%s\n", strings[i]);
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}
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}
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else
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fprintf(stderr, "%p\n", stack_frames[i]);
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}
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free(strings);
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#endif
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}
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#ifndef TRI_ASSERT
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#define TRI_ASSERT(expr) { if (!(expr)) _backtrace(); assert(expr);}
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#define TRI_ASSERT_EXPENSIVE(expr) {if (!(expr)) _backtrace(); assert(expr);}
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#endif
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#else
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#ifndef TRI_ASSERT
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#if defined __cplusplus
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#define TRI_ASSERT(expr) (static_cast<void>(0))
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#define TRI_ASSERT_EXPENSIVE(expr) (static_cast<void>(0))
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#else
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#define TRI_ASSERT(expr) ((void) (0))
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#define TRI_ASSERT_EXPENSIVE(expr) ((void) (0))
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#endif
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#endif
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#endif
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#endif
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// -----------------------------------------------------------------------------
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// --SECTION-- END-OF-FILE
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// -----------------------------------------------------------------------------
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @page\\|// --SECTION--\\|/// @\\}"
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// End:
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