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Diffstat (limited to 'src/global/global_init.h')
-rw-r--r-- | src/global/global_init.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/global/global_init.h b/src/global/global_init.h new file mode 100644 index 00000000..fe6f557b --- /dev/null +++ b/src/global/global_init.h @@ -0,0 +1,108 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2011 New Dream Network + * + * This is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software + * Foundation. See file COPYING. + * + */ + +#ifndef CEPH_COMMON_GLOBAL_INIT_H +#define CEPH_COMMON_GLOBAL_INIT_H + +#include <stdint.h> +#include <vector> +#include <map> +#include <boost/intrusive_ptr.hpp> +#include "include/ceph_assert.h" +#include "common/code_environment.h" +#include "common/common_init.h" + +class CephContext; + +/* + * global_init is the first initialization function that + * daemons and utility programs need to call. It takes care of a lot of + * initialization, including setting up g_ceph_context. + */ +boost::intrusive_ptr<CephContext> +global_init( + const std::map<std::string,std::string> *defaults, + std::vector < const char* >& args, + uint32_t module_type, + code_environment_t code_env, + int flags, + const char *data_dir_option = 0, + bool run_pre_init = true); + +void intrusive_ptr_add_ref(CephContext* cct); +void intrusive_ptr_release(CephContext* cct); + +// just the first half; enough to get config parsed but doesn't start up the +// cct or log. +void global_pre_init(const std::map<std::string,std::string> *defaults, + std::vector < const char* >& args, + uint32_t module_type, code_environment_t code_env, + int flags); + +/* + * perform all of the steps that global_init_daemonize performs just prior + * to actually forking (via daemon(3)). return 0 if we are going to proceed + * with the fork, or -1 otherwise. + */ +int global_init_prefork(CephContext *cct); + +/* + * perform all the steps that global_init_daemonize performs just after + * the fork, except closing stderr, which we'll do later on. + */ +void global_init_postfork_start(CephContext *cct); + +/* + * close stderr, thus completing the postfork. + */ +void global_init_postfork_finish(CephContext *cct); + + +/* + * global_init_daemonize handles daemonizing a process. + * + * If this is called, it *must* be called before common_init_finish. + * Note that this is equivalent to calling _prefork(), daemon(), and + * _postfork. + */ +void global_init_daemonize(CephContext *cct); + +/* + * global_init_chdir changes the process directory. + * + * If this is called, it *must* be called before common_init_finish + */ +void global_init_chdir(const CephContext *cct); + +/* + * Explicitly shut down stderr. Usually, you don't need to do + * this, because global_init_daemonize will do it for you. However, in some + * rare cases you need to call this explicitly. + * + * If this is called, it *must* be called before common_init_finish + */ +int global_init_shutdown_stderr(CephContext *cct); + +/* + * Preload the erasure coding libraries to detect early issues with + * configuration. + */ +int global_init_preload_erasure_code(const CephContext *cct); + +/** + * print daemon startup banner/warning + */ +void global_print_banner(void); + +#endif |