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update page_flags to have more portable definition

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This commit is contained in:
daan 2019-10-17 16:48:16 -07:00
parent 93b4281b82
commit 5de851a84d
7 changed files with 23 additions and 26 deletions
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21
include/mimalloc-types.h
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@ -131,17 +131,13 @@ typedef enum mi_delayed_e {
// The `in_full` and `has_aligned` page flags are put in a union to efficiently
// test if both are false (`value == 0`) in the `mi_free` routine.
typedef struct mi_page_flags_s {
#pragma warning(suppress:4201)
union {
uint8_t full_aligned;
struct {
uint8_t in_full : 1;
uint8_t has_aligned : 1;
};
};
bool is_zero; // `true` if the blocks in the free list are zero initialized
// test if both are false (`full_aligned == 0`) in the `mi_free` routine.
typedef union mi_page_flags_s {
uint8_t full_aligned;
struct {
uint8_t in_full : 1;
uint8_t has_aligned : 1;
} x;
} mi_page_flags_t;
// Thread free list.
@ -177,7 +173,8 @@ typedef struct mi_page_s {
// layout like this to optimize access in `mi_malloc` and `mi_free`
uint16_t capacity; // number of blocks committed, must be the first field, see `segment.c:page_clear`
uint16_t reserved; // number of blocks reserved in memory
mi_page_flags_t flags; // `in_full` and `has_aligned` flags (16 bits)
mi_page_flags_t flags; // `in_full` and `has_aligned` flags (8 bits)
bool is_zero; // `true` if the blocks in the free list are zero initialized
mi_block_t* free; // list of available free blocks (`malloc` allocates from this list)
#if MI_SECURE