X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/fe503dfa41c532a17a4fc3f6b244e72e7783d386..f734ec7475682eb90323e804cbcfddd7e4523992:/src/mc/mc_snapshot.h diff --git a/src/mc/mc_snapshot.h b/src/mc/mc_snapshot.h deleted file mode 100644 index 1b1c7c19e6..0000000000 --- a/src/mc/mc_snapshot.h +++ /dev/null @@ -1,241 +0,0 @@ -/* Copyright (c) 2007-2017. The SimGrid Team. All rights reserved. */ - -/* This program is free software; you can redistribute it and/or modify it - * under the terms of the license (GNU LGPL) which comes with this package. */ - -#ifndef SIMGRID_MC_SNAPSHOT_H -#define SIMGRID_MC_SNAPSHOT_H - -#include -#include -#include -#include - -#include "src/mc/ModelChecker.hpp" -#include "src/mc/RegionSnapshot.hpp" -#include "src/mc/mc_forward.hpp" -#include "src/mc/mc_unw.h" - -SG_BEGIN_DECL() - -// ***** Snapshot region - -XBT_PRIVATE void mc_region_restore_sparse(simgrid::mc::RemoteClient* process, mc_mem_region_t reg); - -static XBT_ALWAYS_INLINE void* mc_translate_address_region_chunked(uintptr_t addr, mc_mem_region_t region) -{ - auto split = simgrid::mc::mmu::split(addr - region->start().address()); - auto pageno = split.first; - auto offset = split.second; - const void* snapshot_page = region->page_data().page(pageno); - return (char*) snapshot_page + offset; -} - -static XBT_ALWAYS_INLINE void* mc_translate_address_region(uintptr_t addr, mc_mem_region_t region, int process_index) -{ - switch (region->storage_type()) { - case simgrid::mc::StorageType::Flat: - { - uintptr_t offset = (uintptr_t) addr - (uintptr_t) region->start().address(); - return (void *) ((uintptr_t) region->flat_data().get() + offset); - } - case simgrid::mc::StorageType::Chunked: - return mc_translate_address_region_chunked(addr, region); - case simgrid::mc::StorageType::Privatized: - { - xbt_assert(process_index >= 0, "Missing process index for privatized region"); - xbt_assert((size_t)process_index < region->privatized_data().size(), "Out of range process index"); - simgrid::mc::RegionSnapshot& subregion = region->privatized_data()[process_index]; - return mc_translate_address_region(addr, &subregion, process_index); - } - case simgrid::mc::StorageType::NoData: - default: - xbt_die("Storage type not supported"); - } -} - -XBT_PRIVATE mc_mem_region_t mc_get_snapshot_region(const void* addr, const simgrid::mc::Snapshot* snapshot, - int process_index); -} - -// ***** MC Snapshot - -/** Ignored data - * - * Some parts of the snapshot are ignored by zeroing them out: the real - * values is stored here. - * */ -typedef struct s_mc_snapshot_ignored_data { - void* start; - std::vector data; -} s_mc_snapshot_ignored_data_t; - -typedef struct s_fd_infos{ - std::string filename; - int number; - off_t current_position; - int flags; -} s_fd_infos_t; - -/** Information about a given stack frame */ -typedef struct s_mc_stack_frame { - /** Instruction pointer */ - unw_word_t ip; - /** Stack pointer */ - unw_word_t sp; - unw_word_t frame_base; - simgrid::mc::Frame* frame; - std::string frame_name; - unw_cursor_t unw_cursor; -} s_mc_stack_frame_t; -typedef s_mc_stack_frame_t* mc_stack_frame_t; - -typedef struct s_local_variable{ - simgrid::mc::Frame* subprogram; - unsigned long ip; - std::string name; - simgrid::mc::Type* type; - void *address; - int region; -} s_local_variable_t; -typedef s_local_variable_t* local_variable_t; - -typedef struct XBT_PRIVATE s_mc_snapshot_stack { - std::vector local_variables; - simgrid::mc::UnwindContext context; - std::vector stack_frames; - int process_index; -} s_mc_snapshot_stack_t, *mc_snapshot_stack_t; - -namespace simgrid { -namespace mc { - -class XBT_PRIVATE Snapshot final : public AddressSpace { -public: - Snapshot(RemoteClient* process, int num_state); - ~Snapshot() = default; - const void* read_bytes(void* buffer, std::size_t size, - RemotePtr address, int process_index = ProcessIndexAny, - ReadOptions options = ReadOptions::none()) const override; - - // To be private - int num_state; - std::size_t heap_bytes_used; - std::vector> snapshot_regions; - std::set enabled_processes; - int privatization_index; - std::vector stack_sizes; - std::vector stacks; - std::vector to_ignore; - std::uint64_t hash; - std::vector ignored_data; - std::vector current_fds; -}; - -} -} - -extern "C" { - -static XBT_ALWAYS_INLINE mc_mem_region_t mc_get_region_hinted(void* addr, simgrid::mc::Snapshot* snapshot, - int process_index, mc_mem_region_t region) -{ - if (region->contain(simgrid::mc::remote(addr))) - return region; - else - return mc_get_snapshot_region(addr, snapshot, process_index); -} - -static const void* mc_snapshot_get_heap_end(simgrid::mc::Snapshot* snapshot); - -} - -#ifdef __cplusplus - -namespace simgrid { -namespace mc { - -XBT_PRIVATE std::shared_ptr take_snapshot(int num_state); -XBT_PRIVATE void restore_snapshot(std::shared_ptr snapshot); - -} -} - -#endif - -extern "C" { - -XBT_PRIVATE void mc_restore_page_snapshot_region(simgrid::mc::RemoteClient* process, void* start_addr, - simgrid::mc::ChunkedData const& pagenos); - -const void* MC_region_read_fragmented( - mc_mem_region_t region, void* target, const void* addr, std::size_t size); - -int MC_snapshot_region_memcmp( - const void* addr1, mc_mem_region_t region1, - const void* addr2, mc_mem_region_t region2, std::size_t size); -XBT_PRIVATE int MC_snapshot_memcmp( - const void* addr1, simgrid::mc::Snapshot* snapshot1, - const void* addr2, simgrid::mc::Snapshot* snapshot2, int process_index, std::size_t size); - -static XBT_ALWAYS_INLINE const void* mc_snapshot_get_heap_end(simgrid::mc::Snapshot* snapshot) -{ - if(snapshot==nullptr) - xbt_die("snapshot is nullptr"); - return mc_model_checker->process().get_heap()->breakval; -} - -/** @brief Read memory from a snapshot region - * - * @param addr Process (non-snapshot) address of the data - * @param region Snapshot memory region where the data is located - * @param target Buffer to store the value - * @param size Size of the data to read in bytes - * @return Pointer where the data is located (target buffer of original location) - */ -static XBT_ALWAYS_INLINE const void* MC_region_read(mc_mem_region_t region, void* target, const void* addr, - std::size_t size) -{ - xbt_assert(region); - - std::uintptr_t offset = (std::uintptr_t)addr - (std::uintptr_t)region->start().address(); - - xbt_assert(region->contain(simgrid::mc::remote(addr)), "Trying to read out of the region boundary."); - - switch (region->storage_type()) { - case simgrid::mc::StorageType::NoData: - default: - xbt_die("Storage type not supported"); - - case simgrid::mc::StorageType::Flat: - return (char*) region->flat_data().get() + offset; - - case simgrid::mc::StorageType::Chunked: - { - // Last byte of the region: - void* end = (char*) addr + size - 1; - if (simgrid::mc::mmu::sameChunk((std::uintptr_t) addr, (std::uintptr_t) end) ) { - // The memory is contained in a single page: - return mc_translate_address_region_chunked((uintptr_t) addr, region); - } else { - // The memory spans several pages: - return MC_region_read_fragmented(region, target, addr, size); - } - } - - // We currently do not pass the process_index to this function so we assume - // that the privatized region has been resolved in the callers: - case simgrid::mc::StorageType::Privatized: - xbt_die("Storage type not supported"); - } -} - -static XBT_ALWAYS_INLINE void* MC_region_read_pointer(mc_mem_region_t region, const void* addr) -{ - void* res; - return *(void**) MC_region_read(region, &res, addr, sizeof(void*)); -} - -SG_END_DECL() - -#endif