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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-06-30 12:24:58 +0000 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-06-30 12:27:06 +0000 |
| commit | 33606b41d35115f887ea688b1a16f2ff85bf2fe4 (patch) | |
| tree | 406b2c7b19a087ba437c68f3dbf0b589fa1d6150 /results/scraper/launchpad-without-comments/1836558 | |
| parent | adedf8771bc4de3113041ca21bd4d0d1c0014b6a (diff) | |
| download | emulator-bug-study-33606b41d35115f887ea688b1a16f2ff85bf2fe4.tar.gz emulator-bug-study-33606b41d35115f887ea688b1a16f2ff85bf2fe4.zip | |
add launchpad bug reports without comments
Diffstat (limited to 'results/scraper/launchpad-without-comments/1836558')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1836558 | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1836558 b/results/scraper/launchpad-without-comments/1836558 new file mode 100644 index 00000000..931d38e8 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1836558 @@ -0,0 +1,48 @@ +Qemu-ppc Memory leak creating threads + +When creating c++ threads (with c++ std::thread), the resulting binary has memory leaks when running with qemu-ppc. + +Eg the following c++ program, when compiled with gcc, consumes more and more memory while running at qemu-ppc. (does not have memory leaks when compiling for Intel, when running same binary on real powerpc CPU hardware also no memory leaks). + +(Note I used function getCurrentRSS to show available memory, see https://stackoverflow.com/questions/669438/how-to-get-memory-usage-at-runtime-using-c; calls commented out here) + +Compiler: powerpc-linux-gnu-g++ (Debian 8.3.0-2) 8.3.0 (but same problem with older g++ compilers even 4.9) +Os: Debian 10.0 ( Buster) (but same problem seen on Debian 9/stetch) +qemu: qemu-ppc version 3.1.50 + + + +--- + +#include <iostream> +#include <thread> +#include <chrono> + + +using namespace std::chrono_literals; + +// Create/run and join a 100 threads. +void Fun100() +{ +// auto b4 = getCurrentRSS(); +// std::cout << getCurrentRSS() << std::endl; + for(int n = 0; n < 100; n++) + { + std::thread t([] + { + std::this_thread::sleep_for( 10ms ); + }); +// std::cout << n << ' ' << getCurrentRSS() << std::endl; + t.join(); + } + std::this_thread::sleep_for( 500ms ); // to give OS some time to wipe memory... +// auto after = getCurrentRSS(); + std::cout << b4 << ' ' << after << std::endl; +} + + +int main(int, char **) +{ + Fun100(); + Fun100(); // memory used keeps increasing +} \ No newline at end of file |