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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /docs/nspr/reference/pr_read.rst | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'docs/nspr/reference/pr_read.rst')
-rw-r--r-- | docs/nspr/reference/pr_read.rst | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/docs/nspr/reference/pr_read.rst b/docs/nspr/reference/pr_read.rst new file mode 100644 index 0000000000..a6d7c03efa --- /dev/null +++ b/docs/nspr/reference/pr_read.rst @@ -0,0 +1,50 @@ +PR_Read +======= + +Reads bytes from a file or socket. + + +Syntax +------ + +.. code:: + + #include <prio.h> + + PRInt32 PR_Read(PRFileDesc *fd, + void *buf, + PRInt32 amount); + + +Parameters +~~~~~~~~~~ + +The function has the following parameters: + +``fd`` + A pointer to a :ref:`PRFileDesc` object for the file or socket. +``buf`` + A pointer to a buffer to hold the data read in. On output, the buffer + contains the data. +``amount`` + The size of ``buf`` (in bytes). + + +Returns +~~~~~~~ + +One of the following values: + +- A positive number indicates the number of bytes actually read in. +- The value 0 means end of file is reached or the network connection is + closed. +- The value -1 indicates a failure. To get the reason for the failure, + call :ref:`PR_GetError`. + + +Description +----------- + +The thread invoking :ref:`PR_Read` blocks until it encounters an +end-of-stream indication, some positive number of bytes (but no more +than ``amount`` bytes) are read in, or an error occurs. |