Merge pull request #13281 from yang-g/log_envar
log GRPC_POLL_STRATEGY when fail to find polling engine
diff --git a/src/core/lib/iomgr/ev_epoll1_linux.cc b/src/core/lib/iomgr/ev_epoll1_linux.cc
index 9e3643f..61da996 100644
--- a/src/core/lib/iomgr/ev_epoll1_linux.cc
+++ b/src/core/lib/iomgr/ev_epoll1_linux.cc
@@ -18,6 +18,8 @@
#include "src/core/lib/iomgr/port.h"
+#include <grpc/support/log.h>
+
/* This polling engine is only relevant on linux kernels supporting epoll() */
#ifdef GRPC_LINUX_EPOLL
#include "src/core/lib/iomgr/ev_epoll1_linux.h"
@@ -34,7 +36,6 @@
#include <grpc/support/alloc.h>
#include <grpc/support/cpu.h>
-#include <grpc/support/log.h>
#include <grpc/support/string_util.h>
#include <grpc/support/tls.h>
#include <grpc/support/useful.h>
@@ -1230,6 +1231,7 @@
* support is available */
const grpc_event_engine_vtable* grpc_init_epoll1_linux(bool explicit_request) {
if (!grpc_has_wakeup_fd()) {
+ gpr_log(GPR_ERROR, "Skipping epoll1 because of no wakeup fd.");
return NULL;
}
@@ -1254,6 +1256,8 @@
/* If GRPC_LINUX_EPOLL is not defined, it means epoll is not available. Return
* NULL */
const grpc_event_engine_vtable* grpc_init_epoll1_linux(bool explicit_request) {
+ gpr_log(GPR_ERROR,
+ "Skipping epoll1 becuase GRPC_LINUX_EPOLL is not defined.");
return NULL;
}
#endif /* defined(GRPC_POSIX_SOCKET) */
diff --git a/src/core/lib/iomgr/ev_epollex_linux.cc b/src/core/lib/iomgr/ev_epollex_linux.cc
index 26ed1f6..caaee76 100644
--- a/src/core/lib/iomgr/ev_epollex_linux.cc
+++ b/src/core/lib/iomgr/ev_epollex_linux.cc
@@ -18,6 +18,8 @@
#include "src/core/lib/iomgr/port.h"
+#include <grpc/support/log.h>
+
/* This polling engine is only relevant on linux kernels supporting epoll() */
#ifdef GRPC_LINUX_EPOLL
@@ -34,7 +36,6 @@
#include <unistd.h>
#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
#include <grpc/support/string_util.h>
#include <grpc/support/tls.h>
#include <grpc/support/useful.h>
@@ -1451,10 +1452,12 @@
}
if (!grpc_has_wakeup_fd()) {
+ gpr_log(GPR_ERROR, "Skipping epollex because of no wakeup fd.");
return NULL;
}
if (!grpc_is_epollexclusive_available()) {
+ gpr_log(GPR_INFO, "Skipping epollex because it is not supported.");
return NULL;
}
@@ -1480,6 +1483,8 @@
* NULL */
const grpc_event_engine_vtable* grpc_init_epollex_linux(
bool explicitly_requested) {
+ gpr_log(GPR_ERROR,
+ "Skipping epollex becuase GRPC_LINUX_EPOLL is not defined.");
return NULL;
}
#endif /* defined(GRPC_POSIX_SOCKET) */
diff --git a/src/core/lib/iomgr/ev_epollsig_linux.cc b/src/core/lib/iomgr/ev_epollsig_linux.cc
index 9a12780..42806e9 100644
--- a/src/core/lib/iomgr/ev_epollsig_linux.cc
+++ b/src/core/lib/iomgr/ev_epollsig_linux.cc
@@ -19,6 +19,7 @@
#include "src/core/lib/iomgr/port.h"
#include <grpc/grpc_posix.h>
+#include <grpc/support/log.h>
/* This polling engine is only relevant on linux kernels supporting epoll() */
#ifdef GRPC_LINUX_EPOLL
@@ -37,7 +38,6 @@
#include <unistd.h>
#include <grpc/support/alloc.h>
-#include <grpc/support/log.h>
#include <grpc/support/string_util.h>
#include <grpc/support/tls.h>
#include <grpc/support/useful.h>
@@ -1711,14 +1711,17 @@
bool explicit_request) {
/* If use of signals is disabled, we cannot use epoll engine*/
if (is_grpc_wakeup_signal_initialized && grpc_wakeup_signal < 0) {
+ gpr_log(GPR_ERROR, "Skipping epollsig because use of signals is disabled.");
return NULL;
}
if (!grpc_has_wakeup_fd()) {
+ gpr_log(GPR_ERROR, "Skipping epollsig because of no wakeup fd.");
return NULL;
}
if (!is_epoll_available()) {
+ gpr_log(GPR_ERROR, "Skipping epollsig because epoll is unavailable.");
return NULL;
}
@@ -1726,6 +1729,8 @@
if (explicit_request) {
grpc_use_signal(SIGRTMIN + 6);
} else {
+ gpr_log(GPR_ERROR,
+ "Skipping epollsig because uninitialized wakeup signal.");
return NULL;
}
}
@@ -1751,6 +1756,8 @@
* NULL */
const grpc_event_engine_vtable* grpc_init_epollsig_linux(
bool explicit_request) {
+ gpr_log(GPR_ERROR,
+ "Skipping epollsig becuase GRPC_LINUX_EPOLL is not defined.");
return NULL;
}
#endif /* defined(GRPC_POSIX_SOCKET) */
diff --git a/src/core/lib/iomgr/ev_poll_posix.cc b/src/core/lib/iomgr/ev_poll_posix.cc
index 554a438..5745a2a 100644
--- a/src/core/lib/iomgr/ev_poll_posix.cc
+++ b/src/core/lib/iomgr/ev_poll_posix.cc
@@ -1712,6 +1712,7 @@
const grpc_event_engine_vtable* grpc_init_poll_posix(bool explicit_request) {
if (!grpc_has_wakeup_fd()) {
+ gpr_log(GPR_ERROR, "Skipping poll because of no wakeup fd.");
return NULL;
}
if (!GRPC_LOG_IF_ERROR("pollset_global_init", pollset_global_init())) {
diff --git a/src/core/lib/iomgr/ev_posix.cc b/src/core/lib/iomgr/ev_posix.cc
index f72f508..a05279a 100644
--- a/src/core/lib/iomgr/ev_posix.cc
+++ b/src/core/lib/iomgr/ev_posix.cc
@@ -172,12 +172,12 @@
gpr_free(strings[i]);
}
gpr_free(strings);
- gpr_free(s);
if (g_event_engine == NULL) {
- gpr_log(GPR_ERROR, "No event engine could be initialized");
+ gpr_log(GPR_ERROR, "No event engine could be initialized from %s", s);
abort();
}
+ gpr_free(s);
}
void grpc_event_engine_shutdown(void) {