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[scudo] Add last release time info to getStats #170902

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Merged
cferris1000 merged 1 commit into from
Dec 10, 2025
Merged

[scudo] Add last release time info to getStats #170902

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16 changes: 15 additions & 1 deletion compiler-rt/lib/scudo/standalone/primary64.h
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,8 @@
#include "thread_annotations.h"
#include "tracing.h"

#include <inttypes.h>

namespace scudo {

// SizeClassAllocator64 is an allocator tuned for 64-bit address space.
Expand Down Expand Up @@ -1150,13 +1152,25 @@ void SizeClassAllocator64<Config>::getStats(ScopedString *Str, uptr ClassId,
"%s %02zu (%6zu): mapped: %6zuK popped: %7zu pushed: %7zu "
"inuse: %6zu total: %6zu releases attempted: %6zu last "
"released: %6zuK latest pushed bytes: %6zuK region: 0x%zx "
"(0x%zx)\n",
"(0x%zx)",
Region->Exhausted ? "E" : " ", ClassId, getSizeByClassId(ClassId),
Region->MemMapInfo.MappedUser >> 10, Region->FreeListInfo.PoppedBlocks,
Region->FreeListInfo.PushedBlocks, InUseBlocks, TotalChunks,
Region->ReleaseInfo.NumReleasesAttempted,
Region->ReleaseInfo.LastReleasedBytes >> 10, RegionPushedBytesDelta >> 10,
Region->RegionBeg, getRegionBaseByClassId(ClassId));
const u64 CurTimeNs = getMonotonicTimeFast();
const u64 LastReleaseAtNs = Region->ReleaseInfo.LastReleaseAtNs;
if (LastReleaseAtNs != 0 && CurTimeNs != LastReleaseAtNs) {
const u64 DiffSinceLastReleaseNs =
CurTimeNs - Region->ReleaseInfo.LastReleaseAtNs;
const u64 LastReleaseSecAgo = DiffSinceLastReleaseNs / 1000000000;
const u64 LastReleaseMsAgo =
(DiffSinceLastReleaseNs % 1000000000) / 1000000;
Str->append("Latest release: %" PRIu64 ":%" PRIu64 " seconds ago",
LastReleaseSecAgo, LastReleaseMsAgo);
}
Str->append("\n");
}

template <typename Config>
Expand Down