[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH RFC v2 09/13] libxl: introduce lock in libxl_ctx
Ian Campbell writes ("Re: [Xen-devel] [PATCH RFC v2 09/13] libxl: introduce lock in libxl_ctx"): > On Fri, 2011-10-28 at 19:37 +0100, Ian Jackson wrote: > > + const pthread_mutex_t mutex_value = > > PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP; ... > > + memcpy(&ctx->lock, &mutex_value, sizeof(ctx->lock)); > > Is this subtly different to > ctx->lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP; > in some way I'm missing? Yes. PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP is formally valid only as an initialiser, not necessarily as an expression. I'm not sure that relevant GCC extensions mean the two are always equivalent. Ian. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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