buffering

I'm on MacOSX. In the logger part of my application, I'm dumping data to a file. suppose I have a globally declared std::ofstream outFile("log"); and in my logging code I have: outFile << "......." ; outFile.flush(); Now, suppose my code crashes after the flush() happens; Is the stuff written to outFile before the flush() guaranteed to be written to disk (note that I don't call a close() ). Thanks! From the C++ runtime's point of view, it should have been written to disk. From an OS perspective it might still linger in a buffer, but that's only going to be an issue if your whole machine

I'm playing video on Android using media player via RTSP. The player takes about 12s to buffer before it starts playing. Anyone know how I can convince the player to buffer less? I have full control over the RTSP server and the SDP it returns. As per usual, as soon as I decide I should ask a question I work out the answer. I have a line "b=AS:91" in my SDP. If I reduce the number the amount of buffering decreases - so b=AS:2 gives about 4 or 5s buffering. 来源： https://stackoverflow.com/questions/3937241/reduce-video-buffering

I am trying to efficiently read from the stdin by using setvbuf in `_IOFBF~ mode. I am new to buffering. I am looking for working examples. The input begins with two integers ( n , k ). The next n lines of input contain 1 integer. The aim is to print how many integers are divisible by k . #define BUFSIZE 32 int main(){ int n, k, tmp, ans=0, i, j; char buf[BUFSIZE+1] = {'0'}; setvbuf(stdin, (char*)NULL, _IONBF, 0); scanf("%d%d\n", &n, &k); while(n>0 && fread(buf, (size_t)1, (size_t)BUFSIZE, stdin)){ i=0; j=0; while(n>0 && sscanf(buf+j, "%d%n", &tmp, &i)){ //printf("tmp %d - scan %d\n",tmp,i); /

I've got to be missing something obvious here, but I can't seem to find anything to allow me to determine when MediaPlayer is buffering audio. I'm streaming internet audio and I want to display a buffering indicator, but nothing I've tried allows me to know when MediaPlayer interrupts the audio to buffer, so I can't properly display a buffering indicator. Any clues? Matt Briançon @Daniel, per your comment on @JRL's answer, you could probably get this working by spinning up a thread and waiting for a timeout. Something like DetectBufferTimeout.java (untested) would do nicely. I do, however,

This question already has an answer here: C++: “std::endl” vs “\n” 13 answers Is there a reason to use endl with cout when I can just use \n ? My C++ book says to use endl, but I don't see why. Is \n not supported as widely as endl , or am I missing something? endl appends '\n' to the stream and calls flush() on the stream. So cout << x << endl; is equivalent to cout << x << '\n'; cout.flush(); A stream may use an internal buffer which gets actually streamed when the stream is flushed. In case of cout you may not notice the difference since it's somehow synchronized ( tied ) with cin , but for