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[libsanitizer] Add descriptions for the common flags. 

Use new(allocator_for_flags) instead of allocator_for_flags.Allocate()
Fix the description output format a bit.

llvm-svn: 204484
This commit is contained in:
Alexander Potapenko 2014-03-21 17:28:12 +00:00
parent 7618632517
commit 25e204e194
2 changed files with 60 additions and 61 deletions
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86
compiler-rt/lib/sanitizer_common/sanitizer_flags.cc
View File

@ -56,31 +56,66 @@ void SetCommonFlagsDefaults(CommonFlags *f) {
}
void ParseCommonFlagsFromString(CommonFlags *f, const char *str) {
ParseFlag(str, &f->symbolize, "symbolize", "");
ParseFlag(str, &f->external_symbolizer_path, "external_symbolizer_path", "");
ParseFlag(str, &f->allow_addr2line, "allow_addr2line", "");
ParseFlag(str, &f->strip_path_prefix, "strip_path_prefix", "");
ParseFlag(str, &f->fast_unwind_on_fatal, "fast_unwind_on_fatal", "");
ParseFlag(str, &f->fast_unwind_on_malloc, "fast_unwind_on_malloc", "");
ParseFlag(str, &f->handle_ioctl, "handle_ioctl", "");
ParseFlag(str, &f->malloc_context_size, "malloc_context_size", "");
ParseFlag(str, &f->log_path, "log_path", "");
ParseFlag(str, &f->verbosity, "verbosity", "");
ParseFlag(str, &f->detect_leaks, "detect_leaks", "");
ParseFlag(str, &f->leak_check_at_exit, "leak_check_at_exit", "");
ParseFlag(str, &f->symbolize, "symbolize",
"If set, use the online symbolizer from common sanitizer runtime to turn "
"virtual addresses to file/line locations.");
ParseFlag(str, &f->external_symbolizer_path, "external_symbolizer_path",
"Path to external symbolizer. If empty, the tool will search $PATH for "
"the symbolizer.");
ParseFlag(str, &f->allow_addr2line, "allow_addr2line",
"If set, allows online symbolizer to run addr2line binary to symbolize "
"stack traces (addr2line will only be used if llvm-symbolizer binary is "
"unavailable.");
ParseFlag(str, &f->strip_path_prefix, "strip_path_prefix",
"Strips this prefix from file paths in error reports.");
ParseFlag(str, &f->fast_unwind_on_fatal, "fast_unwind_on_fatal",
"If available, use the fast frame-pointer-based unwinder on fatal "
"errors.");
ParseFlag(str, &f->fast_unwind_on_malloc, "fast_unwind_on_malloc",
"If available, use the fast frame-pointer-based unwinder on "
"malloc/free.");
ParseFlag(str, &f->handle_ioctl, "handle_ioctl",
"Intercept and handle ioctl requests.");
ParseFlag(str, &f->malloc_context_size, "malloc_context_size",
"Max number of stack frames kept for each allocation/deallocation.");
ParseFlag(str, &f->log_path, "log_path",
"Write logs to \"log_path.pid\". The special values are \"stdout\" and "
"\"stderr\". The default is \"stderr\".");
ParseFlag(str, &f->verbosity, "verbosity",
"Verbosity level (0 - silent, 1 - a bit of output, 2+ - more output).");
ParseFlag(str, &f->detect_leaks, "detect_leaks",
"Enable memory leak detection.");
ParseFlag(str, &f->leak_check_at_exit, "leak_check_at_exit",
"Invoke leak checking in an atexit handler. Has no effect if "
"detect_leaks=false, or if __lsan_do_leak_check() is called before the "
"handler has a chance to run.");
ParseFlag(str, &f->allocator_may_return_null, "allocator_may_return_null",
"");
ParseFlag(str, &f->print_summary, "print_summary", "");
ParseFlag(str, &f->check_printf, "check_printf", "");
ParseFlag(str, &f->handle_segv, "handle_segv", "");
ParseFlag(str, &f->allow_user_segv_handler, "allow_user_segv_handler", "");
ParseFlag(str, &f->use_sigaltstack, "use_sigaltstack", "");
ParseFlag(str, &f->detect_deadlocks, "detect_deadlocks", "");
"If false, the allocator will crash instead of returning 0 on "
"out-of-memory.");
ParseFlag(str, &f->print_summary, "print_summary",
"If false, disable printing error summaries in addition to error "
"reports.");
ParseFlag(str, &f->check_printf, "check_printf",
"Check printf arguments.");
ParseFlag(str, &f->handle_segv, "handle_segv",
"If set, registers the tool's custom SEGV handler (both SIGBUS and "
"SIGSEGV on OSX).");
ParseFlag(str, &f->allow_user_segv_handler, "allow_user_segv_handler",
"If set, allows user to register a SEGV handler even if the tool "
"registers one.");
ParseFlag(str, &f->use_sigaltstack, "use_sigaltstack",
"If set, uses alternate stack for signal handling.");
ParseFlag(str, &f->detect_deadlocks, "detect_deadlocks",
"If set, deadlock detection is enabled.");
ParseFlag(str, &f->clear_shadow_mmap_threshold,
"clear_shadow_mmap_threshold", "");
ParseFlag(str, &f->color, "color", "");
ParseFlag(str, &f->legacy_pthread_cond, "legacy_pthread_cond", "");
ParseFlag(str, &f->help, "help", "");
"clear_shadow_mmap_threshold",
"Large shadow regions are zero-filled using mmap(NORESERVE) instead of "
"memset(). This is the threshold size in bytes.");
ParseFlag(str, &f->color, "color",
"Colorize reports: (always|never|auto).");
ParseFlag(str, &f->legacy_pthread_cond, "legacy_pthread_cond",
"Enables support for dynamic libraries linked with libpthread 2.2.5.");
ParseFlag(str, &f->help, "help", "Print the flag descriptions.");
// Do a sanity check for certain flags.
if (f->malloc_context_size < 1)
@ -149,8 +184,7 @@ bool FlagInDescriptionList(const char *name) {
void AddFlagDescription(const char *name, const char *description) {
if (FlagInDescriptionList(name)) return;
FlagDescription *new_description =
(FlagDescription*)allocator_for_flags.Allocate(
sizeof(FlagDescription));
new(allocator_for_flags) FlagDescription();
new_description->name = name;
new_description->description = description;
flag_descriptions.push_back(new_description);
@ -162,7 +196,7 @@ void PrintFlagDescriptions() {
Printf("Available flags for %s:\n", SanitizerToolName);
while (it.hasNext()) {
FlagDescription *descr = it.next();
Printf("\t%s - %s\n", descr->name, descr->description);
Printf("\t%s\n\t\t- %s\n", descr->name, descr->description);
}
}

35
compiler-rt/lib/sanitizer_common/sanitizer_flags.h
View File

@ -28,63 +28,28 @@ void ParseFlag(const char *env, const char **flag,
const char *name, const char *descr);
struct CommonFlags {
// If set, use the online symbolizer from common sanitizer runtime to turn
// virtual addresses to file/line locations.
bool symbolize;
// Path to external symbolizer. If it is NULL, symbolizer will be looked for
// in PATH. If it is empty (or if "symbolize" is false), external symbolizer
// will not be started.
const char *external_symbolizer_path;
// If set, allows online symbolizer to run addr2line binary to symbolize
// stack traces (addr2line will only be used if llvm-symbolizer binary is not
// available.
bool allow_addr2line;
// Strips this prefix from file paths in error reports.
const char *strip_path_prefix;
// Use fast (frame-pointer-based) unwinder on fatal errors (if available).
bool fast_unwind_on_fatal;
// Use fast (frame-pointer-based) unwinder on malloc/free (if available).
bool fast_unwind_on_malloc;
// Intercept and handle ioctl requests.
bool handle_ioctl;
// Max number of stack frames kept for each allocation/deallocation.
int malloc_context_size;
// Write logs to "log_path.pid".
// The special values are "stdout" and "stderr".
// The default is "stderr".
const char *log_path;
// Verbosity level (0 - silent, 1 - a bit of output, 2+ - more output).
int verbosity;
// Enable memory leak detection.
bool detect_leaks;
// Invoke leak checking in an atexit handler. Has no effect if
// detect_leaks=false, or if __lsan_do_leak_check() is called before the
// handler has a chance to run.
bool leak_check_at_exit;
// If false, the allocator will crash instead of returning 0 on out-of-memory.
bool allocator_may_return_null;
// If false, disable printing error summaries in addition to error reports.
bool print_summary;
// Check printf arguments.
bool check_printf;
// If set, registers the tool's custom SEGV handler (both SIGBUS and SIGSEGV
// on OSX).
bool handle_segv;
// If set, allows user to register a SEGV handler even if the tool registers
// one.
bool allow_user_segv_handler;
// If set, uses alternate stack for signal handling.
bool use_sigaltstack;
// If set, deadlock detection is enabled.
bool detect_deadlocks;
// Large shadow regions are zero-filled using mmap(NORESERVE) instead of
// memset. This is the threshold size in bytes.
uptr clear_shadow_mmap_threshold;
// Colorize reports: (always|never|auto).
const char *color;
// Enables support for dynamic libraries linked with libpthread 2.2.5.
bool legacy_pthread_cond;
// Print help and exit.
bool help;
};