add documentation for tracking tools; rename with prefix MI_TRACK_tool
This commit is contained in:
Daan Leijen
parent
64fb009695
commit
2e6ab0f230
@ -10,8 +10,8 @@ option(MI_PADDING "Enable padding to detect heap block overflow (alway
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option(MI_OVERRIDE "Override the standard malloc interface (e.g. define entry points for malloc() etc)" ON)
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option(MI_XMALLOC "Enable abort() call on memory allocation failure by default" OFF)
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option(MI_SHOW_ERRORS "Show error and warning messages by default (only enabled by default in DEBUG mode)" OFF)
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option(MI_VALGRIND "Compile with Valgrind support (adds a small overhead)" OFF)
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option(MI_ASAN "Compile with address sanitizer support (adds a small overhead)" OFF)
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option(MI_TRACK_VALGRIND "Compile with Valgrind support (adds a small overhead)" OFF)
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option(MI_TRACK_ASAN "Compile with address sanitizer support (adds a small overhead)" OFF)
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option(MI_USE_CXX "Use the C++ compiler to compile the library (instead of the C compiler)" OFF)
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option(MI_SEE_ASM "Generate assembly files" OFF)
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option(MI_OSX_INTERPOSE "Use interpose to override standard malloc on macOS" ON)
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@ -25,7 +25,7 @@ option(MI_BUILD_TESTS "Build test executables" ON)
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option(MI_DEBUG_TSAN "Build with thread sanitizer (needs clang)" OFF)
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option(MI_DEBUG_UBSAN "Build with undefined-behavior sanitizer (needs clang++)" OFF)
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option(MI_SKIP_COLLECT_ON_EXIT, "Skip collecting memory on program exit" OFF)
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option(MI_NO_PADDING "Force no use of padding even in DEBUG mode ets." OFF)
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option(MI_NO_PADDING "Force no use of padding even in DEBUG mode etc." OFF)
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# deprecated options
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option(MI_CHECK_FULL "Use full internal invariant checking in DEBUG mode (deprecated, use MI_DEBUG_FULL instead)" OFF)
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@ -125,42 +125,39 @@ endif()
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if(MI_SECURE)
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message(STATUS "Set full secure build (MI_SECURE=ON)")
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list(APPEND mi_defines MI_SECURE=4)
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#if (MI_VALGRIND)
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# message(WARNING "Secure mode is a bit weakened when compiling with Valgrind support as buffer overflow detection is no longer byte-precise (if running without valgrind)")
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#endif()
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list(APPEND mi_defines MI_SECURE=4)
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endif()
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if(MI_VALGRIND)
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if(MI_TRACK_VALGRIND)
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CHECK_INCLUDE_FILES("valgrind/valgrind.h;valgrind/memcheck.h" MI_HAS_VALGRINDH)
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if (NOT MI_HAS_VALGRINDH)
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set(MI_VALGRIND OFF)
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set(MI_TRACK_VALGRIND OFF)
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message(WARNING "Cannot find the 'valgrind/valgrind.h' and 'valgrind/memcheck.h' -- install valgrind first")
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message(STATUS "Compile **without** Valgrind support (MI_VALGRIND=OFF)")
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message(STATUS "Compile **without** Valgrind support (MI_TRACK_VALGRIND=OFF)")
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else()
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message(STATUS "Compile with Valgrind support (MI_VALGRIND=ON)")
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list(APPEND mi_defines MI_VALGRIND=1)
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message(STATUS "Compile with Valgrind support (MI_TRACK_VALGRIND=ON)")
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list(APPEND mi_defines MI_TRACK_VALGRIND=1)
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endif()
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endif()
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if(MI_ASAN)
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if(MI_TRACK_ASAN)
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if (APPLE AND MI_OVERRIDE)
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set(MI_ASAN OFF)
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message(WARNING "Cannot enable address sanitizer support on macOS if MI_OVERRIDE is ON (MI_ASAN=OFF)")
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set(MI_TRACK_ASAN OFF)
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message(WARNING "Cannot enable address sanitizer support on macOS if MI_OVERRIDE is ON (MI_TRACK_ASAN=OFF)")
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endif()
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if (MI_VALGRIND)
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set(MI_ASAN OFF)
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message(WARNING "Cannot enable address sanitizer support with also Valgrind support enabled (MI_ASAN=OFF)")
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if (MI_TRACK_VALGRIND)
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set(MI_TRACK_ASAN OFF)
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message(WARNING "Cannot enable address sanitizer support with also Valgrind support enabled (MI_TRACK_ASAN=OFF)")
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endif()
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if(MI_ASAN)
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if(MI_TRACK_ASAN)
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CHECK_INCLUDE_FILES("sanitizer/asan_interface.h" MI_HAS_ASANH)
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if (NOT MI_HAS_ASANH)
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set(MI_ASAN OFF)
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set(MI_TRACK_ASAN OFF)
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message(WARNING "Cannot find the 'sanitizer/asan_interface.h' -- install address sanitizer support first")
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message(STATUS "Compile **without** address sanitizer support (MI_ASAN=OFF)")
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message(STATUS "Compile **without** address sanitizer support (MI_TRACK_ASAN=OFF)")
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else()
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message(STATUS "Compile with address sanitizer support (MI_ASAN=ON)")
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list(APPEND mi_defines MI_ASAN=1)
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message(STATUS "Compile with address sanitizer support (MI_TRACK_ASAN=ON)")
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list(APPEND mi_defines MI_TRACK_ASAN=1)
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list(APPEND mi_cflags -fsanitize=address)
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list(APPEND mi_libraries -fsanitize=address)
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endif()
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@ -327,10 +324,10 @@ set(mi_basename "mimalloc")
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if(MI_SECURE)
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set(mi_basename "${mi_basename}-secure")
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endif()
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if(MI_VALGRIND)
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if(MI_TRACK_VALGRIND)
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set(mi_basename "${mi_basename}-valgrind")
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endif()
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if(MI_ASAN)
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if(MI_TRACK_ASAN)
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set(mi_basename "${mi_basename}-asan")
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endif()
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string(TOLOWER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_LC)
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@ -1,5 +1,5 @@
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/* ----------------------------------------------------------------------------
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Copyright (c) 2018-2021, Microsoft Research, Daan Leijen
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Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
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This is free software; you can redistribute it and/or modify it under the
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terms of the MIT license. A copy of the license can be found in the file
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"LICENSE" at the root of this distribution.
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@ -9,20 +9,39 @@ terms of the MIT license. A copy of the license can be found in the file
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#define MIMALLOC_TRACK_H
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/* ------------------------------------------------------------------------------------------------------
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Track memory ranges with macros for tools like Valgrind
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address sanitizer, or other memory checkers.
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Track memory ranges with macros for tools like Valgrind address sanitizer, or other memory checkers.
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These can be defined for tracking allocation:
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#define mi_track_malloc_size(p,reqsize,size,zero)
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#define mi_track_free_size(p,_size)
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The macros are set up such that the size passed to `mi_track_free_size`
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matches the size of the allocation, or the new size of a `mi_track_resize` (currently unused though).
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always matches the size of `mi_track_malloc_size`. (currently, `size == mi_usable_size(p)`).
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The `reqsize` is what the user requested, and `size >= reqsize`.
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The `size` is either byte precise (and `size==reqsize`) if `MI_PADDING` is enabled,
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or otherwise it is the usable block size which may be larger than the original request.
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Use `_mi_block_size_of(void* p)` to get the full block size that was allocated (including padding etc).
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The `zero` parameter is `true` if the allocated block is zero initialized.
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Optional:
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#define mi_track_align(p,alignedp,offset,size)
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#define mi_track_resize(p,oldsize,newsize)
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The `mi_track_align` is called right after a `mi_track_malloc` for aligned pointers in a block.
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The corresponding `mi_track_free` still uses the block start pointer and original size (corresponding to the `mi_track_malloc`).
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The `mi_track_resize` is currently unused but could be called on reallocations within a block.
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The following macros are for tools like asan and valgrind to track whether memory is
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defined, undefined, or not accessible at all:
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#define mi_track_mem_defined(p,size)
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#define mi_track_mem_undefined(p,size)
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#define mi_track_mem_noaccess(p,size)
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The `size` is either byte precise (and what the user requested) if `MI_PADDING` is enabled,
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or otherwise it is the full block size which may be larger than the original request.
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Aligned pointers in a block are signaled right after a `mi_track_malloc`
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with the `mi_track_align` macro. The corresponding `mi_track_free` still
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uses the block start pointer and original size (corresponding to the `mi_track_malloc`).
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-------------------------------------------------------------------------------------------------------*/
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#if MI_VALGRIND
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#if MI_TRACK_VALGRIND
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#define MI_TRACK_ENABLED 1
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#define MI_TRACK_HEAP_DESTROY 1 // track free of individual blocks on heap_destroy
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@ -38,7 +57,7 @@ uses the block start pointer and original size (corresponding to the `mi_track_m
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#define mi_track_mem_undefined(p,size) VALGRIND_MAKE_MEM_UNDEFINED(p,size)
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#define mi_track_mem_noaccess(p,size) VALGRIND_MAKE_MEM_NOACCESS(p,size)
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#elif MI_ASAN
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#elif MI_TRACK_ASAN
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#define MI_TRACK_ENABLED 1
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#define MI_TRACK_HEAP_DESTROY 0
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@ -68,6 +87,9 @@ uses the block start pointer and original size (corresponding to the `mi_track_m
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#endif
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// -------------------
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// Utility definitions
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#ifndef mi_track_resize
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#define mi_track_resize(p,oldsize,newsize) mi_track_free_size(p,oldsize); mi_track_malloc(p,newsize,false)
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#endif
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@ -29,8 +29,9 @@ terms of the MIT license. A copy of the license can be found in the file
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// Define NDEBUG in the release version to disable assertions.
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// #define NDEBUG
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// Define MI_VALGRIND to enable valgrind support
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// #define MI_VALGRIND 1
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// Define MI_TRACK_<tool> to enable tracking support
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// #define MI_TRACK_VALGRIND 1
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// #define MI_TRACK_ASAN 1
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// Define MI_STAT as 1 to maintain statistics; set it to 2 to have detailed statistics (but costs some performance).
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// #define MI_STAT 1
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@ -59,7 +60,7 @@ terms of the MIT license. A copy of the license can be found in the file
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// Reserve extra padding at the end of each block to be more resilient against heap block overflows.
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// The padding can detect buffer overflow on free.
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#if !defined(MI_PADDING) && (MI_SECURE>=3 || MI_DEBUG>=1 || MI_VALGRIND || MI_ASAN)
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#if !defined(MI_PADDING) && (MI_SECURE>=3 || MI_DEBUG>=1 || MI_TRACK_VALGRIND || MI_TRACK_ASAN)
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#define MI_PADDING 1
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#endif
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@ -1,5 +1,5 @@
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/* ----------------------------------------------------------------------------
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Copyright (c) 2018-2022, Microsoft Research, Daan Leijen
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Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
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This is free software; you can redistribute it and/or modify it under the
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terms of the MIT license. A copy of the license can be found in the file
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"LICENSE" at the root of this distribution.
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48
readme.md
48
readme.md
@ -78,7 +78,7 @@ Note: the `v2.x` version has a new algorithm for managing internal mimalloc page
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and fragmentation compared to mimalloc `v1.x` (especially for large workloads). Should otherwise have similar performance
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(see [below](#performance)); please report if you observe any significant performance regression.
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* 2022-12-23, `v1.7.9`, `v2.0.9`: Supports building with asan and improved [Valgrind] support. Support abitrary large
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* 2022-12-23, `v1.7.9`, `v2.0.9`: Supports building with [#asan] and improved [#Valgrind] support. Support abitrary large
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alignments (in particular for `std::pmr` pools).
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Added C++ STL allocators attached to a specific heap (thanks @vmarkovtsev).
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Heap walks now visit all object (including huge objects). Support Windows nano server containers (by Johannes Schindelin,@dscho).
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@ -347,16 +347,19 @@ When _mimalloc_ is built using debug mode, various checks are done at runtime to
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- Double free's, and freeing invalid heap pointers are detected.
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- Corrupted free-lists and some forms of use-after-free are detected.
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## Valgrind
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## Tools
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Generally, we recommend using the standard allocator with the amazing [Valgrind] tool (and
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also for other address sanitizers).
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However, it is possible to build mimalloc with Valgrind support. This has a small performance
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overhead but does allow detecting memory leaks and byte-precise buffer overflows directly on final
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executables. To build with valgrind support, use the `MI_VALGRIND=ON` cmake option:
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Generally, we recommend using the standard allocator with memory tracking tools, but mimalloc
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can also be build to support the [address sanitizer][asan] or the excellent [Valgrind] tool.
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This has a small performance overhead but does allow detecting memory leaks and byte-precise
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buffer overflows directly on final executables. See also the `test/test-wrong.c` file to test with various tools.
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### Valgrind
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To build with valgrind support, use the `MI_TRACK_VALGRIND=ON` cmake option:
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```
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> cmake ../.. -DMI_VALGRIND=ON
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> cmake ../.. -DMI_TRACK_VALGRIND=ON
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```
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This can also be combined with secure mode or debug mode.
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@ -385,6 +388,35 @@ Valgrind support is in its initial development -- please report any issues.
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[Valgrind]: https://valgrind.org/
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[valgrind-soname]: https://valgrind.org/docs/manual/manual-core.html#opt.soname-synonyms
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### ASAN
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To build with the address sanitizer, use the `-DMI_TRACK_ASAN=ON` cmake option:
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```
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> cmake ../.. -DMI_TRACK_ASAN=ON
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```
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This can also be combined with secure mode or debug mode.
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You can then run your programs as:'
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```
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> ASAN_OPTIONS=verbosity=1 <myprogram>
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```
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When you link a program with an address sanitizer build of mimalloc, you should
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generally compile that program too with the address sanitizer enabled.
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For example, assuming you build mimalloc in `out/debug`:
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```
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clang -g -o test-wrong -Iinclude test/test-wrong.c out/debug/libmimalloc-asan-debug.a -lpthread -fsanitize=address -fsanitize-recover=address
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```
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Since the address sanitizer redirects the standard allocation functions, on some platforms (macOSX for example)
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it is required to compile mimalloc with `-DMI_OVERRIDE=OFF`.
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Adress sanitizer support is in its initial development -- please report any issues.
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[asan]: https://github.com/google/sanitizers/wiki/AddressSanitizer
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# Overriding Standard Malloc
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@ -309,7 +309,7 @@ bool check_zero_init(uint8_t* p, size_t size) {
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#if MI_DEBUG >= 2
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bool check_debug_fill_uninit(uint8_t* p, size_t size) {
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#if MI_VALGRIND
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#if MI_TRACK_VALGRIND
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(void)p; (void)size;
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return true; // when compiled with valgrind we don't init on purpose
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#else
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@ -325,7 +325,7 @@ bool check_debug_fill_uninit(uint8_t* p, size_t size) {
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}
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bool check_debug_fill_freed(uint8_t* p, size_t size) {
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#if MI_VALGRIND
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#if MI_TRACK_VALGRIND
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(void)p; (void)size;
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return true; // when compiled with valgrind we don't fill on purpose
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#else
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@ -12,7 +12,7 @@ terms of the MIT license. A copy of the license can be found in the file
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Compile in an "out/debug" folder:
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> cd out/debug
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> cmake ../.. -DMI_VALGRIND=1
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> cmake ../.. -DMI_TRACK_VALGRIND=1
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> make -j8
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and then compile this file as:
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@ -29,7 +29,7 @@ terms of the MIT license. A copy of the license can be found in the file
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Compile in an "out/debug" folder:
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> cd out/debug
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> cmake ../.. -DMI_ASAN=1
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> cmake ../.. -DMI_TRACK_ASAN=1
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> make -j8
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and then compile this file as:
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