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add sanity checking/debug logs to WTS api usage

This commit is contained in:
Doug MacEachern 2005-09-27 19:10:46 +00:00
parent f64b36c0bd
commit bc26bd5029
1 changed files with 61 additions and 14 deletions
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75
src/os/win32/win32_sigar.c
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@ -92,6 +92,26 @@ typedef enum {
#define PERF_VAL_CPU(ix) \
NS100_2SEC(PERF_VAL(ix))
static FARPROC sigar_GetProcAddress(sigar_t *sigar,
HMODULE hModule, LPCSTR lpProcName)
{
FARPROC ptr;
if (!hModule) {
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"GetProcAddress(%s): %s\n",
lpProcName, "No module handle");
}
if (!(ptr = GetProcAddress(hModule, lpProcName))) {
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"GetProcAddress(%s): %s",
lpProcName, sigar_strerror(sigar, GetLastError()));
}
return ptr;
}
static PERF_OBJECT_TYPE *get_perf_object(sigar_t *sigar, char *counter_key,
DWORD *err)
{
@ -2267,20 +2287,46 @@ static int sigar_who_wts(sigar_t *sigar,
WTS_SESSION_INFO *sessions = NULL;
if (!sigar->wts_enum_sessions && sigar->wts_handle) {
sigar->wts_enum_sessions =
(LPWTSENUMERATESESSIONS)GetProcAddress(sigar->wts_handle,
"WTSEnumerateSessionsA");
sigar->wts_free =
(LPWTSFREEMEMORY)GetProcAddress(sigar->wts_handle,
"WTSFreeMemory");
sigar->wts_query_session =
(LPWTSQUERYSESSION)GetProcAddress(sigar->wts_handle,
"WTSQuerySessionInformationA");
sigar->query_station =
(LPSTATIONQUERYINFO)GetProcAddress(sigar->sta_handle,
"WinStationQueryInformationW");
FARPROC ptr;
if ((ptr = sigar_GetProcAddress(sigar,
sigar->wts_handle,
"WTSEnumerateSessionsA")))
{
sigar->wts_enum_sessions = (LPWTSENUMERATESESSIONS)ptr;
}
if ((ptr = sigar_GetProcAddress(sigar,
sigar->wts_handle,
"WTSFreeMemory")))
{
sigar->wts_free = (LPWTSFREEMEMORY)ptr;
}
if ((ptr = sigar_GetProcAddress(sigar,
sigar->wts_handle,
"WTSQuerySessionInformationA")))
{
sigar->wts_query_session = (LPWTSQUERYSESSION)ptr;
}
if ((ptr = sigar_GetProcAddress(sigar,
sigar->sta_handle,
"WinStationQueryInformationW")))
{
sigar->query_station = (LPSTATIONQUERYINFO)ptr;
}
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"Done looking up Terminal Services api functions");
}
if (!sigar->wts_enum_sessions) {
if (!(sigar->wts_enum_sessions &&
sigar->wts_free &&
sigar->wts_query_session))
{
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"Terminal Services api functions not available");
return ENOENT;
}
@ -2360,7 +2406,8 @@ static int sigar_who_wts(sigar_t *sigar,
buffer = NULL;
bytes = 0;
if (sigar->query_station(0,
if (sigar->query_station &&
sigar->query_station(0,
sessionId,
WinStationInformation,
&station_info,