/usr/include/ola/base/Init.h is in libola-dev 0.10.5.nojsmin-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 | /*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Init.h
* A grab bag of functions useful for programs.
* Copyright (C) 2012 Simon Newton
*/
/**
* @defgroup init Initialization
* @brief Functions called during program startup.
*
* Programs using the OLA libraries should call either ServerInit() or
* AppInit(). There are also extra functions to help with installing signal
* handlers and daemonizing a process.
*
* @examplepara
* @code
* // For client applications
* AppInit(argc, argv);
* // For server applications
* ServerInit(argc, argv, &export_map);
* @endcode
*
* @addtogroup init
* @{
* @file Init.h
* @brief Functions called during program startup.
* @}
*/
#ifndef INCLUDE_OLA_BASE_INIT_H_
#define INCLUDE_OLA_BASE_INIT_H_
#include <ola/ExportMap.h>
#include <ola/Callback.h>
#include <string>
namespace ola {
/**
* @addtogroup init
* @{
*/
/**
* @brief Used to initialize a server.
* @param argc argument count
* @param argv pointer to argument strings
* @param export_map an optional pointer to an ExportMap
* @return true on success and false otherwise
* @note If you are a client/application then call AppInit() instead.
*
* This does the following:
* - installs the SEGV handler
* - initializes the random number generator
* - sets the thread scheduling options
* - populates the export map
* - initializes the network stack (Windows only).
*/
bool ServerInit(int argc, char *argv[], ExportMap *export_map);
/**
* @brief Used to initialize a server. Installs the SEGV handler, initializes
* the random number generator and populates the export map. Also sets the help
* string for the program, parses flags and initialises logging from flags.
* @param argc argument count
* @param argv pointer to argument strings
* @param export_map an optional pointer to an ExportMap
* @param first_line the inital line that is displayed in the help section.
* This is displayed after argv[0].
* @param description a multiline description of the program
* @return true on success and false otherwise
* @note If you are a client/application then call AppInit() instead.
* @sa ola::SetHelpString ola::ParseFlags ola::InitLoggingFromFlags
*/
bool ServerInit(int *argc,
char *argv[],
ExportMap *export_map,
const std::string &first_line,
const std::string &description);
/**
* @brief Used to initialize a application. Installs the SEGV handler and
* initializes the random number generator, sets the help string for the
* program, parses flags and initialises logging from flags.
* @param argc argument count
* @param argv pointer to the argument strings
* @param first_line the inital line that is displayed in the help section.
* This is displayed after argv[0].
* @param description a multiline description of the program
* @return true on success and false otherwise
* @note If you are a server then call ServerInit() instead.
* @sa ola::SetHelpString ola::ParseFlags ola::InitLoggingFromFlags
*/
bool AppInit(int *argc,
char *argv[],
const std::string &first_line,
const std::string &description);
/**
* @brief Perform platform-specific initialization of the networking subsystem.
*
* This method is called by ServerInit() and AppInit(), so you only need to
* call this yourself if you're not using those.
* @return true on success and false otherwise
*/
bool NetworkInit();
/**
* @brief Install a signal handler.
* @param signal the signal number to catch
* @param fp is a function pointer to the handler
* @return true on success and false otherwise
*/
bool InstallSignal(int signal, void(*fp)(int signo));
/**
* @brief Install signal handlers to deal with SIGBUS & SIGSEGV.
* @return true on success and false otherwise
*
* On receiving a SIGBUS or SIGSEGV a stack trace will be printed.
*/
bool InstallSEGVHandler();
/**
* @brief Populate the ExportMap with a couple of basic variables.
* @param argc argument count
* @param argv pointer to the arugment strings
* @param export_map ExportMap to populate
*
* This is called by ServerInit(). It sets the following variables:
* - binary: name of the binary.
* - cmd-line: command line used to start the binary
* - fd-limit: the max number of file descriptors
*/
void InitExportMap(int argc, char* argv[], ExportMap *export_map);
/**
* @brief Run as a daemon
*
* Daemonize logs messages if it fails, so it's best to initialize the
* logging system (ola::InitLogging) before calling. However Daemonize() closes
* all open file descriptors so stdout/stderr will point to /dev/null in the
* daemon process. Therefore daemons should always use syslog logging.
*
* If we can't daemonize the process is terminated.
*
* See logging.
* @sa @ref logging
*/
void Daemonise();
/**@}*/
} // namespace ola
#endif // INCLUDE_OLA_BASE_INIT_H_
|