xmlRMutex 29 third_party/libxml/src/include/libxml/threads.h typedef struct _xmlRMutex xmlRMutex; xmlRMutex 30 third_party/libxml/src/include/libxml/threads.h typedef xmlRMutex *xmlRMutexPtr; xmlRMutex 301 third_party/libxml/src/threads.c if ((tok = malloc(sizeof(xmlRMutex))) == NULL)