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feat: add fileBacked and purgeable fields to process.getSystemMemoryInfo() for macOS #48146

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merged 1 commit into from
Aug 28, 2025
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feat: add fileBacked and purgeable fields to process.getSystemMemoryInfo() for macOS #48146

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4 changes: 4 additions & 0 deletions docs/api/process.md
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Original file line number Diff line number Diff line change
Expand Up @@ -211,6 +211,10 @@ Returns `Object`:
system.
* `free` Integer - The total amount of memory not being used by applications or disk
cache.
* `fileBacked` Integer _macOS_ - The amount of memory that currently has been paged out to storage.
Includes memory for file caches, network buffers, and other system services.
* `purgeable` Integer _macOS_ - The amount of memory that is marked as "purgeable". The system can reclaim it
if memory pressure increases.
* `swapTotal` Integer _Windows_ _Linux_ - The total amount of swap memory in Kilobytes available to the
system.
* `swapFree` Integer _Windows_ _Linux_ - The free amount of swap memory in Kilobytes available to the
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5 changes: 4 additions & 1 deletion shell/common/api/electron_bindings.cc
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Expand Up @@ -183,8 +183,11 @@ v8::Local<v8::Value> ElectronBindings::GetSystemMemoryInfo(
#endif
dict.Set("free", free);

#if BUILDFLAG(IS_MAC)
dict.Set("fileBacked", mem_info.file_backed);
dict.Set("purgeable", mem_info.purgeable);
#else
// NB: These return bogus values on macOS
#if !BUILDFLAG(IS_MAC)
dict.Set("swapTotal", mem_info.swap_total);
dict.Set("swapFree", mem_info.swap_free);
#endif
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