печатать форматированный вывод в окне или в стандартную ошибку (print formatted output in a window or to standard error)
Имя (Name)
pmprintf, pmflush - print formatted output in a window or to
standard error
Синопсис C (C Synopsis)
#include <pcp/pmapi.h>
int pmprintf(const char *fmt, ... /*args*/);
int pmflush(void);
cc ... -lpcp
Описание (Description)
The combination of pmprintf and pmflush produces output in either
an xconfirm(1) window, on the standard error stream, or to a file
in a manner similar to fprintf(3). The fmt argument is used to
control the conversion, formatting, and printing of the variable
length args list. The output technique is controlled via an
environment variable.
pmprintf appends the formatted message string to an internal
buffer shared by the two routines, without actually producing any
output.
pmflush causes the internal buffer to be either displayed in a
window, printed on standard error, or flushed to a file and the
internal buffer to be cleared.
Диагностика (Diagnostic)
On successful completion, pmprintf returns the number of
characters transmitted, while pmflush returns a value of zero on
successful completion.
For either routine, a negative value is returned if an error was
encountered, and this can be passed to pmErrStr(3) to obtain the
associated error message.
Файлы (Files)
pmprintf uses the mkstemp(3) function to create a temporary file.
This temporary file is deleted when pmflush is called.
Окружение (Environment)
The environment variable PCP_STDERR controls the output technique
used by pmflush:
If PCP_STDERR is unset, the text is written onto the stderr
stream of the caller.
If PCP_STDERR is set to the literal reserved word DISPLAY
then the text will be displayed as a GUI dialog using
xconfirm(1).
If PCP_STDERR is set to any other value then pmflush
interprets the value as a file name and appends the text to
that file. The file is created if it doesn't already exist,
and in this case if the file creation fails, then stderr is
used instead).
Смотри также (See also)
pmdbg(1), fprintf(3), mkstemp(3), pmErrStr(3) and PMAPI(3).
