X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/1113792240aa3e88b1a2ba75474f338ad8db2ca2..7f0845ec805dc9b93cab3adb223eadd20aa1f169:/src/mc/mc_process.h diff --git a/src/mc/mc_process.h b/src/mc/mc_process.h index c0e9c45d4f..84d90cd6fe 100644 --- a/src/mc/mc_process.h +++ b/src/mc/mc_process.h @@ -7,39 +7,206 @@ #ifndef MC_PROCESS_H #define MC_PROCESS_H +#include +#include + #include "simgrid_config.h" #include +#include +#include "xbt/mmalloc/mmprivate.h" + +#include "simix/popping_private.h" +#include "simix/smx_private.h" + #include "mc_forward.h" +#include "mc_mmalloc.h" // std_heap #include "mc_memory_map.h" +#include "mc_address_space.h" +#include "mc_protocol.h" SG_BEGIN_DECL() +int MC_process_vm_open(pid_t pid, int flags); + typedef enum { MC_PROCESS_NO_FLAG = 0, MC_PROCESS_SELF_FLAG = 1, } e_mc_process_flags_t; +// Those flags are used to track down which cached information +// is still up to date and which information needs to be updated. +typedef enum { + MC_PROCESS_CACHE_FLAG_HEAP = 1, + MC_PROCESS_CACHE_FLAG_MALLOC_INFO = 2, + MC_PROCESS_CACHE_FLAG_SIMIX_PROCESSES = 4, +} e_mc_process_cache_flags_t ; + +typedef struct s_mc_smx_process_info s_mc_smx_process_info_t, *mc_smx_process_info_t; + /** Representation of a process */ struct s_mc_process { + s_mc_address_space_t address_space; e_mc_process_flags_t process_flags; pid_t pid; + int socket; + int status; + bool running; memory_map_t memory_map; void *maestro_stack_start, *maestro_stack_end; - char *libsimgrid_path; mc_object_info_t libsimgrid_info; mc_object_info_t binary_info; - mc_object_info_t object_infos[2]; + mc_object_info_t* object_infos; size_t object_infos_size; + int memory_file; + + /** Copy of `simix_global->process_list` + * + * See mc_smx.c. + */ + xbt_dynar_t smx_process_infos; + + /** Copy of `simix_global->process_to_destroy` + * + * See mc_smx.c. + */ + xbt_dynar_t smx_old_process_infos; + + /** State of the cache (which variables are up to date) */ + e_mc_process_cache_flags_t cache_flags; + + /** Address of the heap structure in the MCed process. */ + void* heap_address; + + /** Copy of the heap structure of the 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. + */ + xbt_mheap_t heap; + + /** Copy of the allocation info structure + * + * 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. + */ + malloc_info* heap_info; + + // ***** Libunwind-data + + /** Full-featured MC-aware libunwind address space for the process + * + * This address space is using a mc_unw_context_t + * (with mc_process_t/mc_address_space_t and unw_context_t). + */ + unw_addr_space_t unw_addr_space; + + /** Underlying libunwind addres-space + * + * The `find_proc_info`, `put_unwind_info`, `get_dyn_info_list_addr` + * operations of the native MC address space is currently delegated + * to this address space (either the local or a ptrace unwinder). + */ + unw_addr_space_t unw_underlying_addr_space; + + /** The corresponding context + */ + void* unw_underlying_context; + + xbt_dynar_t checkpoint_ignore; }; -void MC_process_init(mc_process_t process, pid_t pid); +bool MC_is_process(mc_address_space_t p); + +void MC_process_init(mc_process_t process, pid_t pid, int sockfd); void MC_process_clear(mc_process_t process); -mc_object_info_t MC_process_find_object_info(mc_process_t process, void* ip); -dw_frame_t MC_process_find_function(mc_process_t process, void* ip); +/** Refresh the information about the process + * + * Do not use direclty, this is used by the getters when appropriate + * in order to have fresh data. + */ +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. + * */ +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 + */ +const void* MC_process_read(mc_process_t process, + e_adress_space_read_flags_t flags, + void* local, const void* remote, size_t len, + int process_index); + +const void* MC_process_read_simple(mc_process_t process, + void* local, const void* remote, size_t len); + +const void* MC_process_read_dynar_element(mc_process_t process, + void* local, const void* remote_dynar, size_t i); + +/** 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 + */ +void MC_process_write(mc_process_t process, const void* local, void* remote, size_t len); + +void MC_process_clear_memory(mc_process_t process, void* remote, size_t len); + +/* Functions, variables of the process: */ + +mc_object_info_t MC_process_find_object_info(mc_process_t process, const void* addr); +mc_object_info_t MC_process_find_object_info_exec(mc_process_t process, const void* addr); +mc_object_info_t MC_process_find_object_info_rw(mc_process_t process, const void* addr); + +dw_frame_t MC_process_find_function(mc_process_t process, const void* ip); + +void MC_process_read_variable(mc_process_t process, const char* name, void* target, size_t size); + +static inline xbt_mheap_t MC_process_get_heap(mc_process_t process) +{ + if (MC_process_is_self(process)) + return std_heap; + 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 (MC_process_is_self(process)) + return std_heap->heapinfo; + 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 + */ +dw_variable_t MC_process_find_variable_by_name(mc_process_t process, const char* name); SG_END_DECL()