1 /* Copyright (c) 2007-2010, 2012-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #ifndef SIMGRID_SIMIX_HPP
8 #define SIMGRID_SIMIX_HPP
18 #include <xbt/function_types.h>
19 #include <xbt/future.hpp>
21 #include <simgrid/simix.h>
23 XBT_PUBLIC(void) simcall_run_kernel(std::function<void()> const& code);
25 /** Execute some code in the kernel and block
27 * run_blocking() is a generic blocking simcall. It is given a callback
28 * which is executed immediately in the SimGrid kernel. The callback is
29 * responsible for setting the suitable logic for waking up the process
32 * @ref simix::kernelSync() is a higher level wrapper for this.
34 XBT_PUBLIC(void) simcall_run_blocking(std::function<void()> const& code);
36 template<class F> inline
37 void simcall_run_kernel(F& f)
39 simcall_run_kernel(std::function<void()>(std::ref(f)));
41 template<class F> inline
42 void simcall_run_blocking(F& f)
44 simcall_run_blocking(std::function<void()>(std::ref(f)));
51 /** Execute some code in the kernel/maestro
53 * This can be used to enforce mutual exclusion with other simcall.
54 * More importantly, this enforces a deterministic/reproducible ordering
55 * of the operation with respect to other simcalls.
58 typename std::result_of<F()>::type kernelImmediate(F&& code)
60 // If we are in the maestro, we take the fast path and execute the
61 // code directly without simcall mashalling/unmarshalling/dispatch:
62 if (SIMIX_is_maestro())
63 return std::forward<F>(code)();
65 // If we are in the application, pass the code to the maestro which
66 // executes it for us and reports the result. We use a std::future which
67 // conveniently handles the success/failure value for us.
68 typedef typename std::result_of<F()>::type R;
69 simgrid::xbt::Result<R> result;
70 simcall_run_kernel([&]{
71 xbt_assert(SIMIX_is_maestro(), "Not in maestro");
72 simgrid::xbt::fulfillPromise(result, std::forward<F>(code));
80 XBT_PUBLIC_CLASS ContextFactory {
85 explicit ContextFactory(std::string name) : name_(std::move(name)) {}
86 virtual ~ContextFactory();
87 virtual Context* create_context(std::function<void()> code,
88 void_pfn_smxprocess_t cleanup, smx_process_t process) = 0;
90 // Optional methods for attaching main() as a context:
92 /** Creates a context from the current context of execution
94 * This will not work on all implementation of `ContextFactory`.
96 virtual Context* attach(void_pfn_smxprocess_t cleanup_func, smx_process_t process);
97 virtual Context* create_maestro(std::function<void()> code, smx_process_t process);
99 virtual void run_all() = 0;
100 virtual Context* self();
101 std::string const& name() const
106 void declare_context(void* T, std::size_t size);
108 template<class T, class... Args>
109 T* new_context(Args&&... args)
111 T* context = new T(std::forward<Args>(args)...);
112 this->declare_context(context, sizeof(T));
117 XBT_PUBLIC_CLASS Context {
119 std::function<void()> code_;
120 void_pfn_smxprocess_t cleanup_func_ = nullptr;
121 smx_process_t process_ = nullptr;
125 Context(std::function<void()> code,
126 void_pfn_smxprocess_t cleanup_func,
127 smx_process_t process);
132 bool has_code() const
136 smx_process_t process()
138 return this->process_;
140 void set_cleanup(void_pfn_smxprocess_t cleanup)
142 cleanup_func_ = cleanup;
148 virtual void suspend() = 0;
151 XBT_PUBLIC_CLASS AttachContext : public Context {
154 AttachContext(std::function<void()> code,
155 void_pfn_smxprocess_t cleanup_func,
156 smx_process_t process)
157 : Context(std::move(code), cleanup_func, process)
160 ~AttachContext() override;
162 /** Called by the context when it is ready to give control
165 virtual void attach_start() = 0;
167 /** Called by the context when it has finished its job */
168 virtual void attach_stop() = 0;
171 XBT_PUBLIC(void) set_maestro(std::function<void()> code);
172 XBT_PUBLIC(void) create_maestro(std::function<void()> code);
178 * Type of function that creates a process.
179 * The function must accept the following parameters:
180 * void* process: the process created will be stored there
181 * const char *name: a name for the object. It is for user-level information and can be NULL
182 * xbt_main_func_t code: is a function describing the behavior of the process
183 * void *data: data a pointer to any data one may want to attach to the new object.
184 * sg_host_t host: the location where the new process is executed
185 * int argc, char **argv: parameters passed to code
186 * xbt_dict_t pros: properties
188 typedef smx_process_t (*smx_creation_func_t) (
189 /* name */ const char*,
190 std::function<void()> code,
191 /* userdata */ void*,
192 /* hostname */ const char*,
193 /* kill_time */ double,
194 /* props */ xbt_dict_t,
195 /* auto_restart */ int,
196 /* parent_process */ smx_process_t);
199 XBT_PUBLIC(void) SIMIX_function_register_process_create(smx_creation_func_t function);
201 XBT_PUBLIC(smx_process_t) simcall_process_create(const char *name,
202 std::function<void()> code,
204 const char *hostname,
206 xbt_dict_t properties,
209 XBT_PUBLIC(smx_timer_t) SIMIX_timer_set(double date, std::packaged_task<void()> callback);
211 template<class F> inline
212 XBT_PUBLIC(smx_timer_t) SIMIX_timer_set(double date, F callback)
214 return SIMIX_timer_set(date, std::packaged_task<void()>(std::move(callback)));
217 template<class R, class T> inline
218 XBT_PUBLIC(smx_timer_t) SIMIX_timer_set(double date, R(*callback)(T*), T* arg)
220 return SIMIX_timer_set(date, [=](){ callback(arg); });