diff options
Diffstat (limited to 'indra/llcommon/llprocess.h')
| -rw-r--r-- | indra/llcommon/llprocess.h | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/indra/llcommon/llprocess.h b/indra/llcommon/llprocess.h index 06ada83698..51010966f9 100644 --- a/indra/llcommon/llprocess.h +++ b/indra/llcommon/llprocess.h @@ -340,6 +340,20 @@ public: typedef std::size_t size_type; static const size_type npos; + + /** + * Get accumulated buffer length. + * + * For WritePipe, is there still pending data to send to child? + * + * For ReadPipe, we often need to refrain from actually reading the + * std::istream returned by get_istream() until we've accumulated + * enough data to make it worthwhile. For instance, if we're expecting + * a number from the child, but the child happens to flush "12" before + * emitting "3\n", get_istream() >> myint could return 12 rather than + * 123! + */ + virtual size_type size() const = 0; }; /// As returned by getWritePipe() or getOptWritePipe() @@ -388,16 +402,6 @@ public: virtual std::string read(size_type len) = 0; /** - * Get accumulated buffer length. - * Often we need to refrain from actually reading the std::istream - * returned by get_istream() until we've accumulated enough data to - * make it worthwhile. For instance, if we're expecting a number from - * the child, but the child happens to flush "12" before emitting - * "3\n", get_istream() >> myint could return 12 rather than 123! - */ - virtual size_type size() const = 0; - - /** * Peek at accumulated buffer data without consuming it. Optional * parameters give you substr() functionality. * |