X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/4f0b473db654af3da6cc609b6d94b5b6d9652c4c..89df17fd2f872e224e49bbdeeba43ca76a5b7d71:/src/mc/mc_process.h diff --git a/src/mc/mc_process.h b/src/mc/mc_process.h index 666d5f3b21..5879580461 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 @@ -27,13 +29,9 @@ #include "mc_base.h" #include "mc_mmalloc.h" // std_heap #include "mc_memory_map.h" -#include "mc_address_space.h" +#include "AddressSpace.hpp" #include "mc_protocol.h" -SG_BEGIN_DECL() - -int MC_process_vm_open(pid_t pid, int flags); - typedef int mc_process_flags_t; #define MC_PROCESS_NO_FLAG 0 #define MC_PROCESS_SELF_FLAG 1 @@ -48,23 +46,120 @@ typedef int mc_process_cache_flags_t; typedef struct s_mc_smx_process_info s_mc_smx_process_info_t, *mc_smx_process_info_t; +namespace simgrid { +namespace mc { + +struct IgnoredRegion { + std::uint64_t addr; + size_t size; +}; + /** Representation of a process */ -struct s_mc_process { - s_mc_address_space_t address_space; +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, + 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_; } + + bool in_maestro_stack(remote_ptr p) const + { + return p >= this->maestro_stack_start_ && p < this->maestro_stack_end_; + } + + bool running() const + { + return running_; + } + + void terminate(int status) + { + status_ = status; + running_ = false; + } + + int status() const + { + return status_; + } + +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; +private: + int status_; + bool running_; memory_map_t memory_map; - void *maestro_stack_start, *maestro_stack_end; + remote_ptr maestro_stack_start_, maestro_stack_end_; + int memory_file; + std::vector ignored_regions_; + +public: // object info + // TODO, make private (first, objectify mc_object_info_t) mc_object_info_t libsimgrid_info; mc_object_info_t binary_info; mc_object_info_t* object_infos; size_t object_infos_size; - int memory_file; +public: // Copies of MCed SMX data structures /** Copy of `simix_global->process_list` * * See mc_smx.c. @@ -87,7 +182,7 @@ struct s_mc_process { * * 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; @@ -95,11 +190,11 @@ struct s_mc_process { * * 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; - // ***** Libunwind-data +public: // Libunwind-data /** Full-featured MC-aware libunwind address space for the process * @@ -119,98 +214,16 @@ struct s_mc_process { /** The corresponding context */ void* unw_underlying_context; - - xbt_dynar_t checkpoint_ignore; }; -XBT_INTERNAL bool MC_is_process(mc_address_space_t p); - -MC_SHOULD_BE_INTERNAL void MC_process_init(mc_process_t process, pid_t pid, int sockfd); -XBT_INTERNAL void MC_process_clear(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. +/** 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: */ - -/** Read data from a process memory - * - * @param process the process - * @param local local memory address (destination) - * @param remote target process memory address (source) - * @param len data size - */ -XBT_INTERNAL const void* MC_process_read(mc_process_t process, - adress_space_read_flags_t flags, - void* local, const void* remote, size_t len, - int process_index); - -// Simplified versions/wrappers (whould be moved in mc_address_space): -XBT_INTERNAL const void* MC_process_read_simple(mc_process_t process, - void* local, const void* remote, size_t len); -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: */ +int open_vm(pid_t pid, int flags); -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);