mirror of
https://github.com/DeusData/codebase-memory-mcp.git
synced 2026-10-26 06:43:15 +08:00
Martin Vogel
85fc74fc31
- handle_processes: GetProcessMemoryInfo + GetProcessTimes (Windows), getrusage (POSIX) — real process metrics on both platforms - handle_process_kill: TerminateProcess via OpenProcess (Windows), kill(SIGTERM) (POSIX) - index_thread_fn: CreateProcess + WaitForSingleObject (Windows), fork+exec+waitpid (POSIX) - cbm_clock_gettime: QueryPerformanceCounter (Windows) — replaces all bare clock_gettime calls across 6 files - cbm_nanosleep, cbm_strcasestr, cbm_mkdir: compat shims - CBM_TLS: _Thread_local (C11 standard, works on all compilers) - Replace bare strndup with cbm_strndup, guard POSIX headers - Add mingw-w64 cross-compile to Docker test infrastructure
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/*
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* vmem.h — Budget-tracked virtual memory allocator.
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*
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* Allocates via mmap/VirtualAlloc instead of malloc to avoid ptmalloc2's
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* per-thread arena fragmentation (the cause of 321GB VSZ on Linux kernel
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* indexing with 12 workers).
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*
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* Budget: configurable fraction of physical RAM (default 50%). When
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* allocation exceeds the budget, a pressure event is logged. Workers
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* never block — the budget is advisory for monitoring/alerting only.
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*
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* All allocations are page-aligned and zeroed by the OS.
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*/
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#ifndef CBM_VMEM_H
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#define CBM_VMEM_H
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#include <stdbool.h>
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#include <stddef.h>
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/* Initialize vmem with a budget = ram_fraction * total_physical_ram.
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* Thread-safe: only the first call takes effect.
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* Must be called before any cbm_vmem_alloc() calls. */
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void cbm_vmem_init(double ram_fraction);
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/* Allocate size bytes via mmap/VirtualAlloc.
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* Returns page-aligned, zeroed memory. NULL on failure.
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* Tracks allocation against the budget and logs pressure events. */
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void *cbm_vmem_alloc(size_t size);
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/* Free memory previously allocated by cbm_vmem_alloc.
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* size must match the original allocation size. */
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void cbm_vmem_free(void *ptr, size_t size);
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/* Current total allocated bytes (atomic). */
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size_t cbm_vmem_allocated(void);
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/* Peak allocated bytes seen so far. */
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size_t cbm_vmem_peak(void);
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/* Total budget in bytes. */
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size_t cbm_vmem_budget(void);
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/* Returns true if current allocation exceeds the budget. */
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bool cbm_vmem_over_budget(void);
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/* Per-worker budget hint: budget / num_workers.
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* For monitoring/logging only — workers never block. */
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size_t cbm_vmem_worker_budget(int num_workers);
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#endif /* CBM_VMEM_H */
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