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LibCore: Allow caching and reusing the ProcFS file descriptors

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Because ProcFS will refresh the data upon seek to 0, we can re-use
the same file descriptor. This saves us from having to open it every
time, but it also reduces the odds that we are unable to open a new
file descriptor due to low memory conditions.
This commit is contained in:
Tom 2021-01-03 10:08:51 -07:00 • committed by Andreas Kling
parent cf89180c35
commit bc3c0fa936
2 changed files with 21 additions and 6 deletions
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2
Libraries/LibCore/ProcessStatisticsReader.h
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@ -28,6 +28,7 @@
#include <AK/HashMap.h>
#include <AK/String.h>
#include <LibCore/File.h>
#include <unistd.h>
namespace Core {
@ -86,6 +87,7 @@ struct ProcessStatistics {
class ProcessStatisticsReader {
public:
static Optional<HashMap<pid_t, Core::ProcessStatistics>> get_all(RefPtr<Core::File>&);
static Optional<HashMap<pid_t, Core::ProcessStatistics>> get_all();
private: