7155300: Include pthread.h on all POSIX platforms except Solaris to improve portability

Reviewed-by: alanb, dholmes

src/solaris/bin/java_md.c

@@ -37,10 +37,10 @@
 #include "manifest_info.h"
 #include "version_comp.h"
 
-#ifdef __linux__
-#include <pthread.h>
-#else
+#ifdef __solaris__
 #include <thread.h>
+#else
+#include <pthread.h>
 #endif
 
 #define JVM_DLL "libjvm.so"
@@ -1434,7 +1434,18 @@ jlong_format_specifier() {
 int
 ContinueInNewThread0(int (JNICALL *continuation)(void *), jlong stack_size, void * args) {
     int rslt;
-#ifdef __linux__
+#ifdef __solaris__
+    thread_t tid;
+    long flags = 0;
+    if (thr_create(NULL, stack_size, (void *(*)(void *))continuation, args, flags, &tid) == 0) {
+      void * tmp;
+      thr_join(tid, NULL, &tmp);
+      rslt = (int)tmp;
+    } else {
+      /* See below. Continue in current thread if thr_create() failed */
+      rslt = continuation(args);
+    }
+#else
     pthread_t tid;
     pthread_attr_t attr;
     pthread_attr_init(&attr);
@@ -1459,17 +1470,6 @@ ContinueInNewThread0(int (JNICALL *continuation)(void *), jlong stack_size, void
     }
 
     pthread_attr_destroy(&attr);
-#else
-    thread_t tid;
-    long flags = 0;
-    if (thr_create(NULL, stack_size, (void *(*)(void *))continuation, args, flags, &tid) == 0) {
-      void * tmp;
-      thr_join(tid, NULL, &tmp);
-      rslt = (int)tmp;
-    } else {
-      /* See above. Continue in current thread if thr_create() failed */
-      rslt = continuation(args);
-    }
 #endif
     return rslt;
 }

src/solaris/transport/socket/socket_md.c

@@ -35,8 +35,7 @@
 #include <sys/time.h>
 #ifdef __solaris__
 #include <thread.h>
-#endif
-#if defined(__linux__) || defined(_ALLBSD_SOURCE)
+#else
 #include <pthread.h>
 #include <sys/poll.h>
 #endif
@@ -306,9 +305,7 @@ dbgsysTlsGet(int index) {
     return r;
 }
 
-#endif
-
-#if defined(__linux__) || defined(_ALLBSD_SOURCE)
+#else
 int
 dbgsysTlsAlloc() {
     pthread_key_t key;