diff options
Diffstat (limited to 'src/core/cpu/buffer.cpp')
| -rw-r--r-- | src/core/cpu/buffer.cpp | 36 |
1 files changed, 23 insertions, 13 deletions
diff --git a/src/core/cpu/buffer.cpp b/src/core/cpu/buffer.cpp index 00d9279..97c61d9 100644 --- a/src/core/cpu/buffer.cpp +++ b/src/core/cpu/buffer.cpp @@ -90,25 +90,35 @@ bool CPUBuffer::allocate() { size_t buf_size = p_buffer->size(); int retval; + void *shared_ptr = p_buffer->shared_ptr(); if (buf_size == 0) // Something went wrong... return false; - if (!p_data) - { - // We don't use a host ptr, we need to allocate a buffer - retval = posix_memalign(&p_data, 128, buf_size); // align for type double16 size. - if (retval) - return false; - - p_data_malloced = true; + if (!shared_ptr) { + if (!p_data) + { + // We don't use a host ptr, we need to allocate a buffer + retval = posix_memalign(&p_data, 128, buf_size); // align for type double16 size. + if (retval) + return false; + + p_data_malloced = true; + + // Now set the shared data pointer, so we need not allocate again for this MemObject: + p_buffer->setSharedPtr(p_data); + } + + if (p_buffer->type() != MemObject::SubBuffer && + p_buffer->flags() & CL_MEM_COPY_HOST_PTR) + { + std::memcpy(p_data, p_buffer->host_ptr(), buf_size); + } } - - if (p_buffer->type() != MemObject::SubBuffer && - p_buffer->flags() & CL_MEM_COPY_HOST_PTR) - { - std::memcpy(p_data, p_buffer->host_ptr(), buf_size); + else { + // If the CPUBuffer data has already been allocated by the first device, use it: + if (!p_data) p_data = shared_ptr; } // Say to the memobject that we are allocated |