X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8173f52406580284c8ec5feab41784a8f4aed8ce..2b7bf2ece143fd83bafa635a83940f58083e7f18:/src/mc/mc_process.h diff --git a/src/mc/mc_process.h b/src/mc/mc_process.h index 19640aa8a8..00251e4eb5 100644 --- a/src/mc/mc_process.h +++ b/src/mc/mc_process.h @@ -10,6 +10,8 @@ #include #include +#include + #include "simgrid_config.h" #include @@ -47,18 +49,79 @@ typedef struct s_mc_smx_process_info s_mc_smx_process_info_t, *mc_smx_process_in namespace simgrid { namespace mc { +struct IgnoredRegion { + std::uint64_t addr; + size_t size; +}; + /** Representation of a process */ class Process : public AddressSpace { public: Process(pid_t pid, int sockfd); ~Process(); + + bool is_self() const + { + return this->process_flags & MC_PROCESS_SELF_FLAG; + } + + // Read memory: const void* read_bytes(void* buffer, std::size_t size, - std::uint64_t address, int process_index = ProcessIndexAny, - ReadMode mode = Normal) override; -public: // to be private + remote_ptr address, int process_index = ProcessIndexAny, + ReadMode mode = Normal) const MC_OVERRIDE; + void read_variable(const char* name, void* target, size_t size) const; + template + T read_variable(const char *name) const + { + static_assert(std::is_trivial::value, "Cannot read a non-trivial type"); + T res; + read_variable(name, &res, sizeof(T)); + return res; + } + char* read_string(remote_ptr address) const; + + // Write memory: + void write_bytes(const void* buffer, size_t len, remote_ptr address); + void clear_bytes(remote_ptr address, size_t len); + + // Debug information: + mc_object_info_t find_object_info(remote_ptr addr) const; + mc_object_info_t find_object_info_exec(remote_ptr addr) const; + mc_object_info_t find_object_info_rw(remote_ptr addr) const; + dw_frame_t find_function(remote_ptr ip) const; + dw_variable_t find_variable(const char* name) const; + + // Heap access: + xbt_mheap_t get_heap() + { + if (!(this->cache_flags & MC_PROCESS_CACHE_FLAG_HEAP)) + this->refresh_heap(); + return this->heap; + } + malloc_info* get_malloc_info() + { + if (!(this->cache_flags & MC_PROCESS_CACHE_FLAG_MALLOC_INFO)) + this->refresh_malloc_info(); + return this->heap_info; + } + + std::vector const& ignored_regions() const + { + return ignored_regions_; + } + void ignore_region(std::uint64_t address, std::size_t size); + + pid_t pid() const { return pid_; } + +private: + void init_memory_map_info(); + void refresh_heap(); + void refresh_malloc_info(); +private: mc_process_flags_t process_flags; - pid_t pid; + pid_t pid_; +public: // to be private int socket; int status; bool running; @@ -92,7 +155,7 @@ public: // to be private * * This is refreshed with the `MC_process_refresh` call. * This is not used if the process is the current one: - * use `MC_process_get_heap_info` in order to use it. + * use `get_heap_info()` in order to use it. */ xbt_mheap_t heap; @@ -100,7 +163,7 @@ public: // to be private * * This is refreshed with the `MC_process_refresh` call. * This is not used if the process is the current one: - * use `MC_process_get_malloc_info` in order to use it. + * use `get_malloc_info()` in order to use it. */ malloc_info* heap_info; @@ -125,100 +188,18 @@ public: // to be private */ void* unw_underlying_context; - xbt_dynar_t checkpoint_ignore; +private: + std::vector ignored_regions_; }; -} -} - -SG_BEGIN_DECL() - -int MC_process_vm_open(pid_t pid, int flags); - -/** Refresh the information about the process - * - * Do not use direclty, this is used by the getters when appropriate - * in order to have fresh data. +/** Open a FD to a remote process memory (`/dev/$pid/mem`) */ -XBT_INTERNAL void MC_process_refresh_heap(mc_process_t process); - -/** Refresh the information about the process - * - * Do not use direclty, this is used by the getters when appropriate - * in order to have fresh data. - * */ -XBT_INTERNAL void MC_process_refresh_malloc_info(mc_process_t process); - -static inline -bool MC_process_is_self(mc_process_t process) -{ - return process->process_flags & MC_PROCESS_SELF_FLAG; -} - -/* Process memory access: */ +int open_vm(pid_t pid, int flags); -static inline -const void* MC_process_read(mc_process_t process, - simgrid::mc::AddressSpace::ReadMode mode, - void* local, const void* remote, size_t len, - int process_index) -{ - return process->read_bytes(local, len, (std::uint64_t)remote, process_index, mode); } - -// Simplified versions/wrappers (whould be moved in mc_address_space): -static inline const void* MC_process_read_simple(mc_process_t process, - void* local, const void* remote, size_t len) -{ - return process->read_bytes(local, len, (std::uint64_t)remote); -} - -XBT_INTERNAL const void* MC_process_read_dynar_element(mc_process_t process, - void* local, const void* remote_dynar, size_t i, size_t len); -XBT_INTERNAL unsigned long MC_process_read_dynar_length(mc_process_t process, - const void* remote_dynar); - -/** Write data to a process memory - * - * @param process the process - * @param local local memory address (source) - * @param remote target process memory address (target) - * @param len data size - */ -XBT_INTERNAL void MC_process_write(mc_process_t process, - const void* local, void* remote, size_t len); - -XBT_INTERNAL void MC_process_clear_memory(mc_process_t process, - void* remote, size_t len); - -/* Functions, variables of the process: */ - -XBT_INTERNAL mc_object_info_t MC_process_find_object_info(mc_process_t process, const void* addr); -XBT_INTERNAL mc_object_info_t MC_process_find_object_info_exec(mc_process_t process, const void* addr); -XBT_INTERNAL mc_object_info_t MC_process_find_object_info_rw(mc_process_t process, const void* addr); - -XBT_INTERNAL dw_frame_t MC_process_find_function(mc_process_t process, const void* ip); - -XBT_INTERNAL void MC_process_read_variable(mc_process_t process, const char* name, void* target, size_t size); -XBT_INTERNAL char* MC_process_read_string(mc_process_t, void* address); - -static inline xbt_mheap_t MC_process_get_heap(mc_process_t process) -{ - if (!(process->cache_flags & MC_PROCESS_CACHE_FLAG_HEAP)) - MC_process_refresh_heap(process); - return process->heap; } -static inline malloc_info* MC_process_get_malloc_info(mc_process_t process) -{ - if (!(process->cache_flags & MC_PROCESS_CACHE_FLAG_MALLOC_INFO)) - MC_process_refresh_malloc_info(process); - return process->heap_info; -} - -/** Find (one occurence of) the named variable definition - */ -XBT_INTERNAL dw_variable_t MC_process_find_variable_by_name(mc_process_t process, const char* name); +SG_BEGIN_DECL() XBT_INTERNAL void MC_invalidate_cache(void);