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Add asserts aliasing debugging purposes.

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This commit is contained in:
Kurt Zeilenga 2000-06-16 21:25:03 +00:00
parent ddcb56546d
commit 35e77f88be
1 changed files with 49 additions and 0 deletions
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49
libraries/libldap_r/rdwr.c
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@ -80,6 +80,11 @@ ldap_pvt_thread_rdwr_destroy( ldap_pvt_thread_rdwr_t *rwlock )
ldap_pvt_thread_mutex_lock( &rw->ltrw_mutex );
assert( rw->ltrw_w_active >= 0 );
assert( rw->ltrw_w_wait >= 0 );
assert( rw->ltrw_r_active >= 0 );
assert( rw->ltrw_r_wait >= 0 );
/* active threads? */
if( rw->ltrw_r_active > 0 || rw->ltrw_w_active > 0) {
ldap_pvt_thread_mutex_unlock( &rw->ltrw_mutex );
@ -120,6 +125,11 @@ int ldap_pvt_thread_rdwr_rlock( ldap_pvt_thread_rdwr_t *rwlock )
ldap_pvt_thread_mutex_lock( &rw->ltrw_mutex );
assert( rw->ltrw_w_active >= 0 );
assert( rw->ltrw_w_wait >= 0 );
assert( rw->ltrw_r_active >= 0 );
assert( rw->ltrw_r_wait >= 0 );
if( rw->ltrw_w_active > 0 ) {
/* writer is active */
@ -131,6 +141,7 @@ int ldap_pvt_thread_rdwr_rlock( ldap_pvt_thread_rdwr_t *rwlock )
} while( rw->ltrw_w_active > 0 );
rw->ltrw_r_wait--;
assert( rw->ltrw_r_wait >= 0 );
}
rw->ltrw_r_active++;
@ -155,6 +166,11 @@ int ldap_pvt_thread_rdwr_rtrylock( ldap_pvt_thread_rdwr_t *rwlock )
ldap_pvt_thread_mutex_lock( &rw->ltrw_mutex );
assert( rw->ltrw_w_active >= 0 );
assert( rw->ltrw_w_wait >= 0 );
assert( rw->ltrw_r_active >= 0 );
assert( rw->ltrw_r_wait >= 0 );
if( rw->ltrw_w_active > 0) {
ldap_pvt_thread_mutex_unlock( &rw->ltrw_mutex );
return LDAP_PVT_THREAD_EBUSY;
@ -184,6 +200,11 @@ int ldap_pvt_thread_rdwr_runlock( ldap_pvt_thread_rdwr_t *rwlock )
rw->ltrw_r_active--;
assert( rw->ltrw_w_active >= 0 );
assert( rw->ltrw_w_wait >= 0 );
assert( rw->ltrw_r_active >= 0 );
assert( rw->ltrw_r_wait >= 0 );
if (rw->ltrw_r_active == 0 && rw->ltrw_w_wait > 0 ) {
ldap_pvt_thread_cond_signal( &rw->ltrw_write );
}
@ -208,6 +229,11 @@ int ldap_pvt_thread_rdwr_wlock( ldap_pvt_thread_rdwr_t *rwlock )
ldap_pvt_thread_mutex_lock( &rw->ltrw_mutex );
assert( rw->ltrw_w_active >= 0 );
assert( rw->ltrw_w_wait >= 0 );
assert( rw->ltrw_r_active >= 0 );
assert( rw->ltrw_r_wait >= 0 );
if ( rw->ltrw_w_active > 0 || rw->ltrw_r_active > 0 ) {
rw->ltrw_w_wait++;
@ -217,6 +243,7 @@ int ldap_pvt_thread_rdwr_wlock( ldap_pvt_thread_rdwr_t *rwlock )
} while ( rw->ltrw_w_active > 0 || rw->ltrw_r_active > 0 );
rw->ltrw_w_wait--;
assert( rw->ltrw_w_wait >= 0 );
}
rw->ltrw_w_active++;
@ -241,6 +268,11 @@ int ldap_pvt_thread_rdwr_wtrylock( ldap_pvt_thread_rdwr_t *rwlock )
ldap_pvt_thread_mutex_lock( &rw->ltrw_mutex );
assert( rw->ltrw_w_active >= 0 );
assert( rw->ltrw_w_wait >= 0 );
assert( rw->ltrw_r_active >= 0 );
assert( rw->ltrw_r_wait >= 0 );
if ( rw->ltrw_w_active > 0 || rw->ltrw_r_active > 0 ) {
ldap_pvt_thread_mutex_unlock( &rw->ltrw_mutex );
return LDAP_PVT_THREAD_EBUSY;
@ -270,6 +302,11 @@ int ldap_pvt_thread_rdwr_wunlock( ldap_pvt_thread_rdwr_t *rwlock )
rw->ltrw_w_active--;
assert( rw->ltrw_w_active >= 0 );
assert( rw->ltrw_w_wait >= 0 );
assert( rw->ltrw_r_active >= 0 );
assert( rw->ltrw_r_wait >= 0 );
if (rw->ltrw_r_wait > 0) {
ldap_pvt_thread_cond_broadcast( &rw->ltrw_read );
@ -303,6 +340,10 @@ int ldap_pvt_thread_rdwr_readers(ldap_pvt_thread_rdwr_t *rwlock)
assert( rw != NULL );
assert( rw->ltrw_valid == LDAP_PVT_THREAD_RDWR_VALID );
assert( rw->ltrw_w_active >= 0 );
assert( rw->ltrw_w_wait >= 0 );
assert( rw->ltrw_r_active >= 0 );
assert( rw->ltrw_r_wait >= 0 );
return( rw->ltrw_r_active );
}
@ -316,6 +357,10 @@ int ldap_pvt_thread_rdwr_writers(ldap_pvt_thread_rdwr_t *rwlock)
assert( rw != NULL );
assert( rw->ltrw_valid == LDAP_PVT_THREAD_RDWR_VALID );
assert( rw->ltrw_w_active >= 0 );
assert( rw->ltrw_w_wait >= 0 );
assert( rw->ltrw_r_active >= 0 );
assert( rw->ltrw_r_wait >= 0 );
return( rw->ltrw_w_active );
}
@ -329,6 +374,10 @@ int ldap_pvt_thread_rdwr_active(ldap_pvt_thread_rdwr_t *rwlock)
assert( rw != NULL );
assert( rw->ltrw_valid == LDAP_PVT_THREAD_RDWR_VALID );
assert( rw->ltrw_w_active >= 0 );
assert( rw->ltrw_w_wait >= 0 );
assert( rw->ltrw_r_active >= 0 );
assert( rw->ltrw_r_wait >= 0 );
return(ldap_pvt_thread_rdwr_readers(rw) +
ldap_pvt_thread_rdwr_writers(rw));