Martin Vogel
18fa9979ee
Memory management: - Vendor mimalloc v2.1.9 as global allocator (MI_OVERRIDE=1 in prod) - New mem.h/mem.c: RSS-based budget tracking via mi_process_info() - Remove vmem.c/vmem.h (mmap-based budget tracking) - Remove slab tier2 bump allocator (~300 LOC); >64B goes to mimalloc - Slab tier1 pages from malloc (= mimalloc) instead of vmem - Arena blocks from malloc instead of vmem - Budget raised from 35% to 50% RAM (no more untracked C++ heap) Extraction-phase prescan (eliminates disk re-reads): - HTTP call sites: keyword check + URL extraction during extraction - HTTP routes: decorator + source-based extraction during extraction - Config file refs: regex scan during extraction - httplinks: 41.8s → 13ms on Linux kernel (3,212x faster) - configlink: 41.4s → 0.8s on Linux kernel (54x faster) - Linux kernel fast-mode total: 2m38s → 1m18s Bug fixes: - __init__.py Module QN no longer collides with Folder QN - index.ts same fix for JS/TS packages - 13 regression tests for QN collision at FQN + extraction layers - search_graph/search_code default limit raised from 10 to 500k - Resolve all clang-tidy, cppcheck, and clang-format warnings Repo cleanup: - tree-sitter-form, tree-sitter-magma moved to tools/ - .gitignore: build/, node_modules/, graph-ui/dist/, TEST_PLAN.md
42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
#ifndef CBM_ARENA_H
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#define CBM_ARENA_H
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#include <stddef.h>
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// CBMArena is a simple bump allocator that allocates from fixed-size blocks.
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// All memory is freed at once via cbm_arena_destroy(). Individual frees are not
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// supported — this is by design for per-file extraction where all data has the
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// same lifetime.
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#define CBM_ARENA_MAX_BLOCKS 256
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#define CBM_ARENA_DEFAULT_BLOCK_SIZE (64 * 1024) // 64KB initial
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typedef struct {
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char *blocks[CBM_ARENA_MAX_BLOCKS];
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size_t block_sizes[CBM_ARENA_MAX_BLOCKS]; // per-block sizes (for stats)
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int nblocks;
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size_t block_size;
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size_t used; // bytes used in current block
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size_t total_alloc; // cumulative bytes allocated (for stats)
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} CBMArena;
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// Initialize an arena with the default block size.
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void cbm_arena_init(CBMArena *a);
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// Allocate n bytes from the arena. Returns NULL on OOM or block exhaustion.
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// All returned pointers are 8-byte aligned.
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void *cbm_arena_alloc(CBMArena *a, size_t n);
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// Duplicate a string into arena memory. Returns arena-owned copy.
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char *cbm_arena_strdup(CBMArena *a, const char *s);
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// Duplicate a string of known length into arena memory. NUL-terminates.
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char *cbm_arena_strndup(CBMArena *a, const char *s, size_t len);
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// sprintf into arena memory. Returns arena-owned string.
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char *cbm_arena_sprintf(CBMArena *a, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
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// Free all blocks. Arena is invalid after this call.
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void cbm_arena_destroy(CBMArena *a);
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#endif // CBM_ARENA_H
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