diff options
Diffstat (limited to 'src/include/nodes/memnodes.h')
| -rw-r--r-- | src/include/nodes/memnodes.h | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/src/include/nodes/memnodes.h b/src/include/nodes/memnodes.h index 5e036b9b6f5..577ab9cb1f9 100644 --- a/src/include/nodes/memnodes.h +++ b/src/include/nodes/memnodes.h @@ -17,6 +17,24 @@ #include "nodes/nodes.h" /* + * MemoryContextCounters + * Summarization state for MemoryContextStats collection. + * + * The set of counters in this struct is biased towards AllocSet; if we ever + * add any context types that are based on fundamentally different approaches, + * we might need more or different counters here. A possible API spec then + * would be to print only nonzero counters, but for now we just summarize in + * the format historically used by AllocSet. + */ +typedef struct MemoryContextCounters +{ + Size nblocks; /* Total number of malloc blocks */ + Size freechunks; /* Total number of free chunks */ + Size totalspace; /* Total bytes requested from malloc */ + Size freespace; /* The unused portion of totalspace */ +} MemoryContextCounters; + +/* * MemoryContext * A logical context in which memory allocations occur. * @@ -44,7 +62,8 @@ typedef struct MemoryContextMethods void (*delete_context) (MemoryContext context); Size (*get_chunk_space) (MemoryContext context, void *pointer); bool (*is_empty) (MemoryContext context); - void (*stats) (MemoryContext context, int level); + void (*stats) (MemoryContext context, int level, bool print, + MemoryContextCounters *totals); #ifdef MEMORY_CONTEXT_CHECKING void (*check) (MemoryContext context); #endif |