C++ (Cpp) free_gathers示例

示例#1

文件： nvhost_job.c 项目： Sage222/grouper-kernel

static int alloc_gathers(struct nvhost_job *job,
                         int num_cmdbufs)
{
    int err = 0;

    job->gather_mem = NULL;
    job->gathers = NULL;
    job->gather_mem_size = 0;

    if (num_cmdbufs) {
        /* Allocate memory */
        job->gather_mem = nvmap_alloc(job->nvmap,
                                      gather_size(num_cmdbufs),
                                      32, NVMAP_HANDLE_CACHEABLE, 0);
        if (IS_ERR_OR_NULL(job->gather_mem)) {
            err = PTR_ERR(job->gather_mem);
            if (!job->gather_mem)
                err = -ENOMEM;
            job->gather_mem = NULL;
            goto error;
        }
        job->gather_mem_size = gather_size(num_cmdbufs);

        /* Map memory to kernel */
        job->gathers = nvmap_mmap(job->gather_mem);
        if (IS_ERR_OR_NULL(job->gathers)) {
            err = PTR_ERR(job->gathers);
            if (!job->gathers)
                err = -ENOMEM;
            job->gathers = NULL;
            goto error;
        }
    }

    return 0;

error:
    free_gathers(job);
    return err;
}

示例#2

文件： nvhost_job.c 项目： AndroidDeveloperAlliance/ZenKernel_Grouper

static int realloc_gathers(struct nvhost_job *oldjob,
		struct nvhost_job *newjob,
		int num_cmdbufs)
{
	int err = 0;

	/* Check if we can reuse gather buffer */
	if (oldjob->gather_mem_size < gather_size(num_cmdbufs)
			|| oldjob->nvmap != newjob->nvmap) {
		free_gathers(oldjob);
		err = alloc_gathers(newjob, num_cmdbufs);
	} else {
		newjob->gather_mem = oldjob->gather_mem;
		newjob->gathers = oldjob->gathers;
		newjob->gather_mem_size = oldjob->gather_mem_size;

		oldjob->gather_mem = NULL;
		oldjob->gathers = NULL;
		oldjob->gather_mem_size = 0;
	}
	return err;
}