xref: /aoo42x/main/sal/osl/all/printtrace.cxx (revision cdf0e10c)
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27*cdf0e10cSrcweir 
28*cdf0e10cSrcweir #include "precompiled_sal.hxx"
29*cdf0e10cSrcweir 
30*cdf0e10cSrcweir #include "sal/config.h"
31*cdf0e10cSrcweir 
32*cdf0e10cSrcweir #include <cstdarg>
33*cdf0e10cSrcweir #include <cstdio>
34*cdf0e10cSrcweir #include <cstring>
35*cdf0e10cSrcweir 
36*cdf0e10cSrcweir #include <stdio.h> // snprintf, vsnprintf
37*cdf0e10cSrcweir 
38*cdf0e10cSrcweir #include "osl/diagnose.h"
39*cdf0e10cSrcweir #include "osl/thread.hxx"
40*cdf0e10cSrcweir #include "rtl/string.h"
41*cdf0e10cSrcweir #include "sal/types.h"
42*cdf0e10cSrcweir 
43*cdf0e10cSrcweir #include "printtrace.h"
44*cdf0e10cSrcweir 
45*cdf0e10cSrcweir void printTrace(unsigned long pid, char const * format, std::va_list arguments)
46*cdf0e10cSrcweir {
47*cdf0e10cSrcweir     char buf[1024];
48*cdf0e10cSrcweir     int n1 = snprintf(
49*cdf0e10cSrcweir         buf, sizeof buf, "Trace %lu/%" SAL_PRIuUINT32 ": \"", pid,
50*cdf0e10cSrcweir         osl::Thread::getCurrentIdentifier());
51*cdf0e10cSrcweir     OSL_ASSERT(
52*cdf0e10cSrcweir         n1 >= 0 &&
53*cdf0e10cSrcweir         (static_cast< unsigned int >(n1) <
54*cdf0e10cSrcweir          sizeof buf - RTL_CONSTASCII_LENGTH("\"...\n")));
55*cdf0e10cSrcweir     int n2 = sizeof buf - n1 - RTL_CONSTASCII_LENGTH("\"...\n");
56*cdf0e10cSrcweir     int n3 = vsnprintf(buf + n1, n2, format, arguments);
57*cdf0e10cSrcweir     if (n3 < 0) {
58*cdf0e10cSrcweir         std::strcpy(buf + n1, "\"???\n");
59*cdf0e10cSrcweir     } else if (n3 < n2) {
60*cdf0e10cSrcweir         std::strcpy(buf + n1 + n3, "\"\n");
61*cdf0e10cSrcweir     } else {
62*cdf0e10cSrcweir         std::strcpy(buf + n1 + n2 - 1, "\"...\n");
63*cdf0e10cSrcweir     }
64*cdf0e10cSrcweir     std::fputs(buf, stderr);
65*cdf0e10cSrcweir }
66