| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2026 Tiger Data, Inc. | ||
| 3 | * Licensed under the PostgreSQL License. See LICENSE for details. | ||
| 4 | * | ||
| 5 | * memory.h - Memory abstraction interface | ||
| 6 | * | ||
| 7 | * Provides a unified interface for memory allocation that works in both | ||
| 8 | * standalone mode (arena allocator) and PostgreSQL mode (palloc/pfree). | ||
| 9 | * | ||
| 10 | * Build configuration: | ||
| 11 | * - Standalone: define VS_STANDALONE, compile memory_standalone.c | ||
| 12 | * - PostgreSQL: no define needed, header-only (macros map to palloc) | ||
| 13 | */ | ||
| 14 | |||
| 15 | #ifndef VS_MEMORY_H | ||
| 16 | #define VS_MEMORY_H | ||
| 17 | |||
| 18 | #ifdef VS_STANDALONE | ||
| 19 | #include "standalone/memory_sa.h" | ||
| 20 | #else | ||
| 21 | #include "pg/memory_pg.h" | ||
| 22 | #endif | ||
| 23 | |||
| 24 | /* Helper for cleanup attribute (works in both modes) */ | ||
| 25 | static inline void | ||
| 26 | 2608 | vs_memctx_delete_ptr(VsMemCtx *ctx) | |
| 27 | { | ||
| 28 |
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2608 | if (*ctx) |
| 29 | 2608 | vs_memctx_delete(*ctx); | |
| 30 | 1096 | } | |
| 31 | |||
| 32 | /* | ||
| 33 | * Scoped context (RAII-style via cleanup attribute) | ||
| 34 | * | ||
| 35 | * Usage: | ||
| 36 | * void some_function(void) { | ||
| 37 | * VS_MEMCTX_SCOPE(work_ctx); | ||
| 38 | * VsMemCtx old = vs_memctx_switch(work_ctx); | ||
| 39 | * // allocations happen in work_ctx | ||
| 40 | * // ... | ||
| 41 | * vs_memctx_switch(old); | ||
| 42 | * } // work_ctx automatically deleted here | ||
| 43 | */ | ||
| 44 | #ifdef VS_STANDALONE | ||
| 45 | #define VS_MEMCTX_SCOPE(name) \ | ||
| 46 | VsMemCtx name __attribute__((cleanup(vs_memctx_delete_ptr))) = \ | ||
| 47 | vs_memctx_create(vs_current_memctx, #name) | ||
| 48 | #else | ||
| 49 | #define VS_MEMCTX_SCOPE(name) \ | ||
| 50 | VsMemCtx name __attribute__((cleanup(vs_memctx_delete_ptr))) = \ | ||
| 51 | vs_memctx_create(CurrentMemoryContext, #name) | ||
| 52 | #endif | ||
| 53 | |||
| 54 | #endif /* VS_MEMORY_H */ | ||
| 55 |