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- {root@Pineapple:src_0}$ valgrind --help
- usage: valgrind [options] prog-and-args
- tool-selection option, with default in [ ]:
- --tool=<name> use the Valgrind tool named <name> [memcheck]
- basic user options for all Valgrind tools, with defaults in [ ]:
- -h --help show this message
- --help-debug show this message, plus debugging options
- --version show version
- -q --quiet run silently; only print error msgs
- -v --verbose be more verbose -- show misc extra info
- --trace-children=no|yes Valgrind-ise child processes (follow execve)? [no]
- --trace-children-skip=patt1,patt2,... specifies a list of executables
- that --trace-children=yes should not trace into
- --trace-children-skip-by-arg=patt1,patt2,... same as --trace-children-skip=
- but check the argv[] entries for children, rather
- than the exe name, to make a follow/no-follow decision
- --child-silent-after-fork=no|yes omit child output between fork & exec? [no]
- --vgdb=no|yes|full activate gdbserver? [yes]
- full is slower but provides precise watchpoint/step
- --vgdb-error=<number> invoke gdbserver after <number> errors [999999999]
- to get started quickly, use --vgdb-error=0
- and follow the on-screen directions
- --vgdb-stop-at=event1,event2,... invoke gdbserver for given events [none]
- where event is one of:
- startup exit valgrindabexit all none
- --track-fds=no|yes track open file descriptors? [no]
- --time-stamp=no|yes add timestamps to log messages? [no]
- --log-fd=<number> log messages to file descriptor [2=stderr]
- --log-file=<file> log messages to <file>
- --log-socket=ipaddr:port log messages to socket ipaddr:port
- user options for Valgrind tools that report errors:
- --xml=yes emit error output in XML (some tools only)
- --xml-fd=<number> XML output to file descriptor
- --xml-file=<file> XML output to <file>
- --xml-socket=ipaddr:port XML output to socket ipaddr:port
- --xml-user-comment=STR copy STR verbatim into XML output
- --demangle=no|yes automatically demangle C++ names? [yes]
- --num-callers=<number> show <number> callers in stack traces [12]
- --error-limit=no|yes stop showing new errors if too many? [yes]
- --exit-on-first-error=no|yes exit code on the first error found? [no]
- --error-exitcode=<number> exit code to return if errors found [0=disable]
- --error-markers=<begin>,<end> add lines with begin/end markers before/after
- each error output in plain text mode [none]
- --show-error-list=no|yes show detected errors list and
- suppression counts at exit [no]
- -s same as --show-error-list=yes
- --keep-debuginfo=no|yes Keep symbols etc for unloaded code [no]
- This allows saved stack traces (e.g. memory leaks)
- to include file/line info for code that has been
- dlclose'd (or similar)
- --show-below-main=no|yes continue stack traces below main() [no]
- --default-suppressions=yes|no
- load default suppressions [yes]
- --suppressions=<filename> suppress errors described in <filename>
- --gen-suppressions=no|yes|all print suppressions for errors? [no]
- --input-fd=<number> file descriptor for input [0=stdin]
- --dsymutil=no|yes run dsymutil on Mac OS X when helpful? [yes]
- --max-stackframe=<number> assume stack switch for SP changes larger
- than <number> bytes [2000000]
- --main-stacksize=<number> set size of main thread's stack (in bytes)
- [min(max(current 'ulimit' value,1MB),16MB)]
- user options for Valgrind tools that replace malloc:
- --alignment=<number> set minimum alignment of heap allocations [8]
- --redzone-size=<number> set minimum size of redzones added before/after
- heap blocks (in bytes). [16]
- --xtree-memory=none|allocs|full profile heap memory in an xtree [none]
- and produces a report at the end of the execution
- none: no profiling, allocs: current allocated
- size/blocks, full: profile current and cumulative
- allocated size/blocks and freed size/blocks.
- --xtree-memory-file=<file> xtree memory report file [xtmemory.kcg.%p]
- uncommon user options for all Valgrind tools:
- --fullpath-after= (with nothing after the '=')
- show full source paths in call stacks
- --fullpath-after=string like --fullpath-after=, but only show the
- part of the path after 'string'. Allows removal
- of path prefixes. Use this flag multiple times
- to specify a set of prefixes to remove.
- --extra-debuginfo-path=path absolute path to search for additional
- debug symbols, in addition to existing default
- well known search paths.
- --debuginfo-server=ipaddr:port also query this server
- (valgrind-di-server) for debug symbols
- --allow-mismatched-debuginfo=no|yes [no]
- for the above two flags only, accept debuginfo
- objects that don't "match" the main object
- --smc-check=none|stack|all|all-non-file [all-non-file]
- checks for self-modifying code: none, only for
- code found in stacks, for all code, or for all
- code except that from file-backed mappings
- --read-inline-info=yes|no read debug info about inlined function calls
- and use it to do better stack traces.
- [yes] on Linux/Android/Solaris for the tools
- Memcheck/Massif/Helgrind/DRD only.
- [no] for all other tools and platforms.
- --read-var-info=yes|no read debug info on stack and global variables
- and use it to print better error messages in
- tools that make use of it (Memcheck, Helgrind,
- DRD) [no]
- --vgdb-poll=<number> gdbserver poll max every <number> basic blocks [5000]
- --vgdb-shadow-registers=no|yes let gdb see the shadow registers [no]
- --vgdb-prefix=<prefix> prefix for vgdb FIFOs [/tmp/vgdb-pipe]
- --run-libc-freeres=no|yes free up glibc memory at exit on Linux? [yes]
- --run-cxx-freeres=no|yes free up libstdc++ memory at exit on Linux
- and Solaris? [yes]
- --sim-hints=hint1,hint2,... activate unusual sim behaviours [none]
- where hint is one of:
- lax-ioctls lax-doors fuse-compatible enable-outer
- no-inner-prefix no-nptl-pthread-stackcache fallback-llsc none
- --fair-sched=no|yes|try schedule threads fairly on multicore systems [no]
- --kernel-variant=variant1,variant2,...
- handle non-standard kernel variants [none]
- where variant is one of:
- bproc android-no-hw-tls
- android-gpu-sgx5xx android-gpu-adreno3xx none
- --merge-recursive-frames=<number> merge frames between identical
- program counters in max <number> frames) [0]
- --num-transtab-sectors=<number> size of translated code cache [32]
- more sectors may increase performance, but use more memory.
- --avg-transtab-entry-size=<number> avg size in bytes of a translated
- basic block [0, meaning use tool provided default]
- --aspace-minaddr=0xPP avoid mapping memory below 0xPP [guessed]
- --valgrind-stacksize=<number> size of valgrind (host) thread's stack
- (in bytes) [1048576]
- --show-emwarns=no|yes show warnings about emulation limits? [no]
- --require-text-symbol=:sonamepattern:symbolpattern abort run if the
- stated shared object doesn't have the stated
- text symbol. Patterns can contain ? and *.
- --soname-synonyms=syn1=pattern1,syn2=pattern2,... synonym soname
- specify patterns for function wrapping or replacement.
- To use a non-libc malloc library that is
- in the main exe: --soname-synonyms=somalloc=NONE
- in libxyzzy.so: --soname-synonyms=somalloc=libxyzzy.so
- --sigill-diagnostics=yes|no warn about illegal instructions? [yes]
- --unw-stack-scan-thresh=<number> Enable stack-scan unwind if fewer
- than <number> good frames found [0, meaning "disabled"]
- NOTE: stack scanning is only available on arm-linux.
- --unw-stack-scan-frames=<number> Max number of frames that can be
- recovered by stack scanning [5]
- --resync-filter=no|yes|verbose [yes on MacOS, no on other OSes]
- attempt to avoid expensive address-space-resync operations
- --max-threads=<number> maximum number of threads that valgrind can
- handle [500]
- user options for Memcheck:
- --leak-check=no|summary|full search for memory leaks at exit? [summary]
- --leak-resolution=low|med|high differentiation of leak stack traces [high]
- --show-leak-kinds=kind1,kind2,.. which leak kinds to show?
- [definite,possible]
- --errors-for-leak-kinds=kind1,kind2,.. which leak kinds are errors?
- [definite,possible]
- where kind is one of:
- definite indirect possible reachable all none
- --leak-check-heuristics=heur1,heur2,... which heuristics to use for
- improving leak search false positive [all]
- where heur is one of:
- stdstring length64 newarray multipleinheritance all none
- --show-reachable=yes same as --show-leak-kinds=all
- --show-reachable=no --show-possibly-lost=yes
- same as --show-leak-kinds=definite,possible
- --show-reachable=no --show-possibly-lost=no
- same as --show-leak-kinds=definite
- --xtree-leak=no|yes output leak result in xtree format? [no]
- --xtree-leak-file=<file> xtree leak report file [xtleak.kcg.%p]
- --undef-value-errors=no|yes check for undefined value errors [yes]
- --track-origins=no|yes show origins of undefined values? [no]
- --partial-loads-ok=no|yes too hard to explain here; see manual [yes]
- --expensive-definedness-checks=no|auto|yes
- Use extra-precise definedness tracking [auto]
- --freelist-vol=<number> volume of freed blocks queue [20000000]
- --freelist-big-blocks=<number> releases first blocks with size>= [1000000]
- --workaround-gcc296-bugs=no|yes self explanatory [no]. Deprecated.
- Use --ignore-range-below-sp instead.
- --ignore-ranges=0xPP-0xQQ[,0xRR-0xSS] assume given addresses are OK
- --ignore-range-below-sp=<number>-<number> do not report errors for
- accesses at the given offsets below SP
- --malloc-fill=<hexnumber> fill malloc'd areas with given value
- --free-fill=<hexnumber> fill free'd areas with given value
- --keep-stacktraces=alloc|free|alloc-and-free|alloc-then-free|none
- stack trace(s) to keep for malloc'd/free'd areas [alloc-and-free]
- --show-mismatched-frees=no|yes show frees that don't match the allocator? [yes]
- Extra options read from ~/.valgrindrc, $VALGRIND_OPTS, ./.valgrindrc
- Memcheck is Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
- Valgrind is Copyright (C) 2000-2017, and GNU GPL'd, by Julian Seward et al.
- LibVEX is Copyright (C) 2004-2017, and GNU GPL'd, by OpenWorks LLP et al.
- Bug reports, feedback, admiration, abuse, etc, to: www.valgrind.org.
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