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bt: Enumerate all threads when symbolizing stacks in the bt utility.

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Enumerate tid's from /proc/{pid}/stacks/ and use it to print the
backtrace for all active threads in the specified process.
This commit is contained in:
Brian Gianforcaro 2021-04-30 21:51:42 -07:00 • committed by Linus Groh
parent f1c98dc5ea
commit ca213ab374
1 changed files with 33 additions and 22 deletions
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55
Userland/Utilities/bt.cpp
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@ -6,6 +6,7 @@
#include <AK/LexicalPath.h> #include <AK/LexicalPath.h>
#include <LibCore/ArgsParser.h> #include <LibCore/ArgsParser.h>
#include <LibCore/DirIterator.h>
#include <LibCore/EventLoop.h> #include <LibCore/EventLoop.h>
#include <LibCore/File.h> #include <LibCore/File.h>
#include <LibSymbolClient/Client.h> #include <LibSymbolClient/Client.h>
@ -54,31 +55,41 @@ int main(int argc, char** argv)
args_parser.parse(argc, argv); args_parser.parse(argc, argv);
Core::EventLoop loop; Core::EventLoop loop;
// FIXME: Support multiple threads in the same process! Core::DirIterator iterator(String::formatted("/proc/{}/stacks", pid), Core::DirIterator::SkipDots);
auto symbols = SymbolClient::symbolicate_thread(pid, pid); if (iterator.has_error()) {
for (auto& symbol : symbols) { warnln("Error: pid '{}' doesn't appear to exist.", pid);
out("{:p} ", symbol.address); return 1;
if (!symbol.name.is_empty()) }
out("{} ", symbol.name);
if (!symbol.filename.is_empty()) {
bool linked = false;
out("("); while (iterator.has_next()) {
pid_t tid = iterator.next_path().to_int().value();
outln("tid: {}", tid);
auto symbols = SymbolClient::symbolicate_thread(pid, tid);
for (auto& symbol : symbols) {
out("{:p} ", symbol.address);
if (!symbol.name.is_empty())
out("{} ", symbol.name);
if (!symbol.filename.is_empty()) {
bool linked = false;
// See if we can find the sources in /usr/src out("(");
// FIXME: I'm sure this can be improved!
auto full_path = LexicalPath::canonicalized_path(String::formatted("/usr/src/serenity/dummy/dummy/{}", symbol.filename)); // See if we can find the sources in /usr/src
if (access(full_path.characters(), F_OK) == 0) { // FIXME: I'm sure this can be improved!
linked = true; auto full_path = LexicalPath::canonicalized_path(String::formatted("/usr/src/serenity/dummy/dummy/{}", symbol.filename));
out("\033]8;;file://{}{}?line_number={}\033\\", hostname, full_path, symbol.line_number); if (access(full_path.characters(), F_OK) == 0) {
linked = true;
out("\033]8;;file://{}{}?line_number={}\033\\", hostname, full_path, symbol.line_number);
}
out("\033[34;1m{}:{}\033[0m", LexicalPath(symbol.filename).basename(), symbol.line_number);
if (linked)
out("\033]8;;\033\\");
out(")");
} }
outln("");
out("\033[34;1m{}:{}\033[0m", LexicalPath(symbol.filename).basename(), symbol.line_number);
if (linked)
out("\033]8;;\033\\");
out(")");
} }
outln(""); outln("");
} }