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emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.10 Precedence: list Reply-To: FFmpeg development discussions and patches Subject: [FFmpeg-devel] [PATCH 2/4] avfilter/dnn_backend_torch: fix memory leak with persistent input buffer List-Id: FFmpeg development discussions and patches Archived-At: Archived-At: List-Archive: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: Raja Rathour via ffmpeg-devel Cc: Raja Rathour Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Archived-At: List-Archive: List-Post: --- libavfilter/dnn/dnn_backend_torch.cpp | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) diff --git a/libavfilter/dnn/dnn_backend_torch.cpp b/libavfilter/dnn/dnn_backend_torch.cpp index 4c781cc0b6..fee1cfb3a7 100644 --- a/libavfilter/dnn/dnn_backend_torch.cpp +++ b/libavfilter/dnn/dnn_backend_torch.cpp @@ -47,6 +47,8 @@ typedef struct THModel { typedef struct THInferRequest { torch::Tensor *output; torch::Tensor *input_tensor; + float *input_data; ///< persistent buffer for input data + size_t input_data_size; ///< size of the persistent buffer } THInferRequest; typedef struct THRequestItem { @@ -94,6 +96,7 @@ static void th_free_request(THInferRequest *request) delete(request->input_tensor); request->input_tensor = NULL; } + // Add these lines to free the persistent buffer if (request->input_data) { av_freep(&request->input_data); request->input_data_size = 0; @@ -199,17 +202,12 @@ static int fill_model_input_th(THModel *th_model, THRequestItem *request) input.dims[height_idx] = task->in_frame->height; input.dims[width_idx] = task->in_frame->width; - // Calculate required size for the current frame - cur_size = input.dims[height_idx] * input.dims[width_idx] * - input.dims[channel_idx] * sizeof(float); - - /** - * Dynamic Resizing Logic: - * Only reallocate if the existing buffer is too small or doesn't exist. - * Removed the (float *) cast to comply with FFmpeg style guidelines. - */ - if (!infer_request->input_data || infer_request->input_data_size < cur_size) { - av_freep(&infer_request->input_data); + // Calculate required size for current frame + size_t cur_size = input.dims[height_idx] * input.dims[width_idx] * + input.dims[channel_idx] * sizeof(float); + + // Initial allocation + if (!infer_request->input_data) { infer_request->input_data = av_malloc(cur_size); if (!infer_request->input_data) return AVERROR(ENOMEM); -- 2.51.0 _______________________________________________ ffmpeg-devel mailing list -- ffmpeg-devel@ffmpeg.org To unsubscribe send an email to ffmpeg-devel-leave@ffmpeg.org