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use only arena's instead of regions

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daanx 2023-04-04 14:58:06 -07:00
parent 1d231be758
commit 77766e20a6
11 changed files with 81 additions and 551 deletions
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46
src/options.c
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@ -41,10 +41,11 @@ typedef struct mi_option_desc_s {
mi_init_t init; // is it initialized yet? (from the environment)
mi_option_t option; // for debugging: the option index should match the option
const char* name; // option name without `mimalloc_` prefix
const char* legacy_name; // potential legacy option name
} mi_option_desc_t;
#define MI_OPTION(opt) mi_option_##opt, #opt
#define MI_OPTION_DESC(opt) {0, UNINIT, MI_OPTION(opt) }
#define MI_OPTION(opt) mi_option_##opt, #opt, NULL
#define MI_OPTION_LEGACY(opt,legacy) mi_option_##opt, #opt, #legacy
static mi_option_desc_t options[_mi_option_last] =
{
@ -58,14 +59,9 @@ static mi_option_desc_t options[_mi_option_last] =
{ 0, UNINIT, MI_OPTION(verbose) },
// the following options are experimental and not all combinations make sense.
{ 1, UNINIT, MI_OPTION(eager_commit) }, // commit per segment directly (4MiB) (but see also `eager_commit_delay`)
#if defined(_WIN32) || (MI_INTPTR_SIZE <= 4) // and other OS's without overcommit?
{ 0, UNINIT, MI_OPTION(eager_region_commit) },
{ 1, UNINIT, MI_OPTION(reset_decommits) }, // reset decommits memory
#else
{ 1, UNINIT, MI_OPTION(eager_region_commit) },
{ 0, UNINIT, MI_OPTION(reset_decommits) }, // reset uses MADV_FREE/MADV_DONTNEED
#endif
{ 1, UNINIT, MI_OPTION_LEGACY(segment_eager_commit,eager_commit) }, // commit per segment directly (4MiB) (but see also `eager_commit_delay`)
{ 2, UNINIT, MI_OPTION_LEGACY(arena_eager_commit,eager_region_commit) },
{ 1, UNINIT, MI_OPTION_LEGACY(purge_decommits,reset_decommits) }, // purge decommits memory (instead of reset)
{ 0, UNINIT, MI_OPTION(large_os_pages) }, // use large OS pages, use only with eager commit to prevent fragmentation of VMA's
{ 0, UNINIT, MI_OPTION(reserve_huge_os_pages) }, // per 1GiB huge pages
{ -1, UNINIT, MI_OPTION(reserve_huge_os_pages_at) }, // reserve huge pages at node N
@ -87,7 +83,12 @@ static mi_option_desc_t options[_mi_option_last] =
{ 16, UNINIT, MI_OPTION(max_warnings) }, // maximum warnings that are output
{ 8, UNINIT, MI_OPTION(max_segment_reclaim)},// max. number of segment reclaims from the abandoned segments per try.
{ 0, UNINIT, MI_OPTION(destroy_on_exit)}, // release all OS memory on process exit; careful with dangling pointer or after-exit frees!
{ 0, UNINIT, MI_OPTION(arena_reserve) }, // reserve memory N KiB at a time (disable for now in v1.x due to regions)
#if (MI_INTPTR_SIZE>4)
{ 1024L * 1024L, UNINIT, MI_OPTION(arena_reserve) }, // reserve memory N KiB at a time
#else
{ 128L * 1024L, UNINIT, MI_OPTION(arena_reserve) },
#endif
{ 500, UNINIT, MI_OPTION(arena_purge_delay) }, // reset/decommit delay in milli-seconds for arena allocation
{ 1, UNINIT, MI_OPTION(allow_purge) } // allow decommit/reset to free (physical) memory back to the OS
};
@ -504,18 +505,27 @@ static bool mi_getenv(const char* name, char* result, size_t result_size) {
static void mi_option_init(mi_option_desc_t* desc) {
// Read option value from the environment
char s[64 + 1];
char buf[64+1];
_mi_strlcpy(buf, "mimalloc_", sizeof(buf));
_mi_strlcat(buf, desc->name, sizeof(buf));
char s[64+1];
if (mi_getenv(buf, s, sizeof(s))) {
size_t len = _mi_strnlen(s,64);
if (len >= sizeof(buf)) len = sizeof(buf) - 1;
bool found = mi_getenv(buf, s, sizeof(s));
if (!found && desc->legacy_name != NULL) {
_mi_strlcpy(buf, "mimalloc_", sizeof(buf));
_mi_strlcat(buf, desc->legacy_name, sizeof(buf));
found = mi_getenv(buf, s, sizeof(s));
if (found) {
_mi_warning_message("environment option \"mimalloc_%s\" is deprecated -- use \"mimalloc_%s\" instead.\n", desc->legacy_name, desc->name);
}
}
if (found) {
size_t len = _mi_strnlen(s, sizeof(buf) - 1);
for (size_t i = 0; i < len; i++) {
buf[i] = _mi_toupper(s[i]);
}
buf[len] = 0;
if (buf[0]==0 || strstr("1;TRUE;YES;ON", buf) != NULL) {
if (buf[0] == 0 || strstr("1;TRUE;YES;ON", buf) != NULL) {
desc->value = 1;
desc->init = INITIALIZED;
}
@ -546,11 +556,11 @@ static void mi_option_init(mi_option_desc_t* desc) {
// if the 'mimalloc_verbose' env var has a bogus value we'd never know
// (since the value defaults to 'off') so in that case briefly enable verbose
desc->value = 1;
_mi_warning_message("environment option mimalloc_%s has an invalid value.\n", desc->name );
_mi_warning_message("environment option mimalloc_%s has an invalid value.\n", desc->name);
desc->value = 0;
}
else {
_mi_warning_message("environment option mimalloc_%s has an invalid value.\n", desc->name );
_mi_warning_message("environment option mimalloc_%s has an invalid value.\n", desc->name);
}
}
}