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compositor: bump nofile rlimits on launch

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ref #6584
This commit is contained in:
Vaxry 2024-06-18 21:52:55 +02:00
parent b98e0876d3
commit e0e3c4c6ae
1 changed files with 43 additions and 0 deletions
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43
src/Compositor.cpp
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@ -29,6 +29,7 @@ using namespace Hyprutils::String;
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/resource.h>
int handleCritSignal(int signo, void* data) {
Debug::log(LOG, "Hyprland received signal {}", signo);
@ -70,6 +71,46 @@ void handleUserSignal(int sig) {
}
}
static void bumpNofile() {
unsigned long limit = 1024;
try {
std::ifstream f("/proc/sys/fs/nr_open");
if (!f.good())
limit = 1073741816;
else {
std::string content((std::istreambuf_iterator<char>(f)), (std::istreambuf_iterator<char>()));
f.close();
limit = std::stoll(content);
}
} catch (...) { limit = 1073741816; }
struct rlimit rlimit_;
if (!getrlimit(RLIMIT_NOFILE, &rlimit_))
Debug::log(LOG, "Old rlimit: soft -> {}, hard -> {}", rlimit_.rlim_cur, rlimit_.rlim_max);
if (rlimit_.rlim_max <= 1024)
rlimit_.rlim_max = limit;
unsigned long oldHardLimit = rlimit_.rlim_max;
rlimit_.rlim_max = limit;
if (setrlimit(RLIMIT_NOFILE, &rlimit_) < 0) {
Debug::log(LOG, "Failed bumping NOFILE limits higher, retrying with previous hard.");
rlimit_.rlim_max = oldHardLimit;
rlimit_.rlim_cur = std::clamp((unsigned long)limit, 1UL, (unsigned long)rlimit_.rlim_max);
if (setrlimit(RLIMIT_NOFILE, &rlimit_) < 0)
Debug::log(LOG, "Failed bumping NOFILE limits higher for the second time.");
}
if (!getrlimit(RLIMIT_NOFILE, &rlimit_))
Debug::log(LOG, "New rlimit: soft -> {}, hard -> {}", rlimit_.rlim_cur, rlimit_.rlim_max);
}
CCompositor::CCompositor() {
m_iHyprlandPID = getpid();
@ -131,6 +172,8 @@ CCompositor::CCompositor() {
setRandomSplash();
Debug::log(LOG, "\nCurrent splash: {}\n\n", m_szCurrentSplash);
bumpNofile();
}
CCompositor::~CCompositor() {