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Test: Unit tests pass.
Change-Id: Ibbdc260bfdf6a6daf091c4a49cdf03e51f6ca6cf

1 files changed, 2 insertions, 114 deletions

diff --git a/libc/malloc_debug/Config.cpp b/libc/malloc_debug/Config.cpp
index 96fc27f73..926b26581 100644
--- a/libc/malloc_debug/Config.cpp
+++ b/libc/malloc_debug/Config.cpp
@@ -319,120 +319,8 @@ bool Config::VerifyValueEmpty(const std::string& option, const std::string& valu
 }
 
 void Config::LogUsage() const {
-  error_log("malloc debug options usage:");
-  error_log("");
-  error_log("  front_guard[=XX]");
-  error_log("    Enables a front guard on all allocations. If XX is set");
-  error_log("    it sets the number of bytes in the guard. The default is");
-  error_log("    %zu bytes, the max bytes is %zu.", DEFAULT_GUARD_BYTES, MAX_GUARD_BYTES);
-  error_log("");
-  error_log("  rear_guard[=XX]");
-  error_log("    Enables a rear guard on all allocations. If XX is set");
-  error_log("    it sets the number of bytes in the guard. The default is");
-  error_log("    %zu bytes, the max bytes is %zu.", DEFAULT_GUARD_BYTES, MAX_GUARD_BYTES);
-  error_log("");
-  error_log("  guard[=XX]");
-  error_log("    Enables both a front guard and a rear guard on all allocations.");
-  error_log("    If XX is set it sets the number of bytes in both guards.");
-  error_log("    The default is %zu bytes, the max bytes is %zu.", DEFAULT_GUARD_BYTES,
-            MAX_GUARD_BYTES);
-  error_log("");
-  error_log("  backtrace[=XX]");
-  error_log("    Enable capturing the backtrace at the point of allocation.");
-  error_log("    If XX is set it sets the number of backtrace frames.");
-  error_log("    This option also enables dumping the backtrace heap data");
-  error_log("    when a signal is received. The data is dumped to the file");
-  error_log("    backtrace_dump_prefix.<PID>.txt.");
-  error_log("    The default is %zu frames, the max number of frames is %zu.",
-            DEFAULT_BACKTRACE_FRAMES, MAX_BACKTRACE_FRAMES);
-  error_log("");
-  error_log("  backtrace_enable_on_signal[=XX]");
-  error_log("    Enable capturing the backtrace at the point of allocation.");
-  error_log("    The backtrace capture is not enabled until the process");
-  error_log("    receives a signal. If XX is set it sets the number of backtrace");
-  error_log("    frames. The default is %zu frames, the max number of frames is %zu.",
-            DEFAULT_BACKTRACE_FRAMES, MAX_BACKTRACE_FRAMES);
-  error_log("");
-  error_log("  backtrace_dump_prefix[=FILE]");
-  error_log("    This option only has meaning if the backtrace option has been specified.");
-  error_log("    This is the prefix of the name of the file to which backtrace heap");
-  error_log("    data will be dumped. The file will be named backtrace_dump_prefix.<PID>.txt.");
-  error_log("    The default is %s.", DEFAULT_BACKTRACE_DUMP_PREFIX);
-
-  error_log("");
-  error_log("  backtrace_dump_on_exit");
-  error_log("    This option only has meaning if the backtrace option has been specified.");
-  error_log("    This will cause all live allocations to be dumped to the file");
-  error_log("    backtrace_dump_prefix.<PID>.final.txt.");
-  error_log("    The default is false.");
-  error_log("");
-  error_log("  backtrace_full");
-  error_log("    Any time a backtrace is acquired, use an unwinder that can");
-  error_log("    display Java stack frames. This unwinder can run slower than");
-  error_log("    normal unwinder.");
-  error_log("");
-  error_log("  fill_on_alloc[=XX]");
-  error_log("    On first allocation, fill with the value 0x%02x.", DEFAULT_FILL_ALLOC_VALUE);
-  error_log("    If XX is set it will only fill up to XX bytes of the");
-  error_log("    allocation. The default is to fill the entire allocation.");
-  error_log("");
-  error_log("  fill_on_free[=XX]");
-  error_log("    On free, fill with the value 0x%02x. If XX is set it will",
-            DEFAULT_FILL_FREE_VALUE);
-  error_log("    only fill up to XX bytes of the allocation. The default is to");
-  error_log("    fill the entire allocation.");
-  error_log("");
-  error_log("  fill[=XX]");
-  error_log("    On both first allocation free, fill with the value 0x%02x on",
-            DEFAULT_FILL_ALLOC_VALUE);
-  error_log("    first allocation and the value 0x%02x. If XX is set, only fill",
-            DEFAULT_FILL_FREE_VALUE);
-  error_log("    up to XX bytes. The default is to fill the entire allocation.");
-  error_log("");
-  error_log("  expand_alloc[=XX]");
-  error_log("    Allocate an extra number of bytes for every allocation call.");
-  error_log("    If XX is set, that is the number of bytes to expand the");
-  error_log("    allocation by. The default is %zu bytes, the max bytes is %zu.",
-            DEFAULT_EXPAND_BYTES, MAX_EXPAND_BYTES);
-  error_log("");
-  error_log("  free_track[=XX]");
-  error_log("    When a pointer is freed, do not free the memory right away.");
-  error_log("    Instead, keep XX of these allocations around and then verify");
-  error_log("    that they have not been modified when the total number of freed");
-  error_log("    allocations exceeds the XX amount. When the program terminates,");
-  error_log("    the rest of these allocations are verified. When this option is");
-  error_log("    enabled, it automatically records the backtrace at the time of the free.");
-  error_log("    The default is to record %zu allocations, the max allocations",
-            DEFAULT_FREE_TRACK_ALLOCATIONS);
-  error_log("    to record is %zu.", MAX_FREE_TRACK_ALLOCATIONS);
-  error_log("");
-  error_log("  free_track_backtrace_num_frames[=XX]");
-  error_log("    This option only has meaning if free_track is set. This indicates");
-  error_log("    how many backtrace frames to capture when an allocation is freed.");
-  error_log("    If XX is set, that is the number of frames to capture. If XX");
-  error_log("    is set to zero, then no backtrace will be captured.");
-  error_log("    The default is to record %zu frames, the max number of frames is %zu.",
-            DEFAULT_BACKTRACE_FRAMES, MAX_BACKTRACE_FRAMES);
-  error_log("");
-  error_log("  leak_track");
-  error_log("    Enable the leak tracking of memory allocations.");
-  error_log("");
-  error_log("  record_allocs[=XX]");
-  error_log("    Record every single allocation/free call. When a specific signal");
-  error_log("    is sent to the process, the contents of recording are written to");
-  error_log("    a file (%s) and the recording is cleared.", DEFAULT_RECORD_ALLOCS_FILE);
-  error_log("    If XX is set, that is the total number of allocations/frees that can");
-  error_log("    recorded. of frames to capture. The default value is %zu.", DEFAULT_RECORD_ALLOCS);
-  error_log("    If the allocation list fills up, all further allocations are not recorded.");
-  error_log("");
-  error_log("  record_allocs_file[=FILE]");
-  error_log("    This option only has meaning if the record_allocs options has been specified.");
-  error_log("    This is the name of the file to which recording information will be dumped.");
-  error_log("    The default is %s.", DEFAULT_RECORD_ALLOCS_FILE);
-  error_log("");
-  error_log("  verify_pointers");
-  error_log("    A lightweight way to verify that free/malloc_usable_size/realloc");
-  error_log("    are passed valid pointers.");
+  error_log("For malloc debug option descriptions go to:");
+  error_log("  https://android.googlesource.com/platform/bionic/+/master/libc/malloc_debug/README.md");
 }
 
 bool Config::GetOption(const char** options_str, std::string* option, std::string* value) {