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nptl: Make pthread_attr_t dynamically extensible

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This introduces the function __pthread_attr_extension to allocate the
extension space, which is freed by pthread_attr_destroy.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Florian Weimer
2020-06-02 10:33:30 +02:00
parent 6993670b52
commit 7538d46113
10 changed files with 98 additions and 33 deletions
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nptl/pthread_create.c
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@ -884,7 +884,7 @@ __pthread_create_2_0 (pthread_t *newthread, const pthread_attr_t *attr,
new_attr.guardsize = ps;
new_attr.stackaddr = NULL;
new_attr.stacksize = 0;
new_attr.cpuset = NULL;
new_attr.extension = NULL;
/* We will pass this value on to the real implementation. */
attr = (pthread_attr_t *) &new_attr;