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meson: do not use set10

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Make all items of config-host.h consistent.  To keep the --disable-coroutine-pool
code visible to the compiler, mutuate the IS_ENABLED() macro from Linux.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2023-10-05 14:31:27 +02:00
parent 9bad39c7e8
commit 230f6e06b8
4 changed files with 19 additions and 4 deletions
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15
include/qemu/compiler.h
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@ -212,4 +212,19 @@
# define QEMU_USED
#endif
/*
* Ugly CPP trick that is like "defined FOO", but also works in C
* code. Useful to replace #ifdef with "if" statements; assumes
* the symbol was defined with Meson's "config.set()", so it is empty
* if defined.
*/
#define IS_ENABLED(x) IS_EMPTY(x)
#define IS_EMPTY_JUNK_ junk,
#define IS_EMPTY(value) IS_EMPTY_(IS_EMPTY_JUNK_##value)
/* Expands to either SECOND_ARG(junk, 1, 0) or SECOND_ARG(IS_EMPTY_JUNK_CONFIG_FOO 1, 0) */
#define SECOND_ARG(first, second, ...) second
#define IS_EMPTY_(junk_maybecomma) SECOND_ARG(junk_maybecomma 1, 0)
#endif /* COMPILER_H */

2
meson.build
View File

@ -2194,7 +2194,7 @@ if get_option('debug_stack_usage') and have_coroutine_pool
message('Disabling coroutine pool to measure stack usage')
have_coroutine_pool = false
endif
config_host_data.set10('CONFIG_COROUTINE_POOL', have_coroutine_pool)
config_host_data.set('CONFIG_COROUTINE_POOL', have_coroutine_pool)
config_host_data.set('CONFIG_DEBUG_GRAPH_LOCK', get_option('debug_graph_lock'))
config_host_data.set('CONFIG_DEBUG_MUTEX', get_option('debug_mutex'))
config_host_data.set('CONFIG_DEBUG_STACK_USAGE', get_option('debug_stack_usage'))

2
tests/unit/test-coroutine.c
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@ -645,7 +645,7 @@ int main(int argc, char **argv)
* with a sentinel value. If there is no freelist this would legitimately
* crash, so skip it.
*/
if (CONFIG_COROUTINE_POOL) {
if (IS_ENABLED(CONFIG_COROUTINE_POOL)) {
g_test_add_func("/basic/no-dangling-access", test_no_dangling_access);
}

4
util/qemu-coroutine.c
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@ -57,7 +57,7 @@ Coroutine *qemu_coroutine_create(CoroutineEntry *entry, void *opaque)
{
Coroutine *co = NULL;
if (CONFIG_COROUTINE_POOL) {
if (IS_ENABLED(CONFIG_COROUTINE_POOL)) {
CoroutineQSList *alloc_pool = get_ptr_alloc_pool();
co = QSLIST_FIRST(alloc_pool);
@ -99,7 +99,7 @@ static void coroutine_delete(Coroutine *co)
{
co->caller = NULL;
if (CONFIG_COROUTINE_POOL) {
if (IS_ENABLED(CONFIG_COROUTINE_POOL)) {
if (release_pool_size < qatomic_read(&pool_max_size) * 2) {
QSLIST_INSERT_HEAD_ATOMIC(&release_pool, co, pool_next);
qatomic_inc(&release_pool_size);