set(HAVE_THREAD_LOCAL_STORAGE 0)
endif()
+CHECK_INCLUDE_FILE("sys/sendfile.h" HAVE_SENDFILE_H)
+CHECK_FUNCTION_EXISTS(sendfile HAVE_SENDFILE)
+if(HAVE_SENDFILE_H AND HAVE_SENDFILE)
+ set(HAVE_SENDFILE 1)
+else()
+ set(HAVE_SENDFILE 0)
+endif()
+
if(enable_model-checking AND NOT "${CMAKE_SYSTEM}" MATCHES "Linux|FreeBSD")
message(WARNING "Support for model-checking has not been enabled on ${CMAKE_SYSTEM}: disabling it")
set(enable_model-checking FALSE)
#include <dlfcn.h>
#include <fcntl.h>
#include <spawn.h>
-#include <sys/sendfile.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <vector>
#include <memory>
+#if HAVE_SENDFILE
+#include <sys/sendfile.h>
+#endif
+
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_kernel, smpi, "Logging specific to SMPI (kernel)");
#include <boost/tokenizer.hpp>
#include <boost/algorithm/string.hpp> /* trim_right / trim_left */
int fdout = open(target_executable.c_str(), O_WRONLY);
xbt_assert(fdout >= 0, "Cannot write into %s", target_executable.c_str());
+#if HAVE_SENDFILE
sendfile(fdout, fdin, NULL, fdin_size);
+#else
+ const int bufsize = 1024 * 1024 * 4;
+ char buf[bufsize];
+ while (int got = read(fdin, buf, bufsize)) {
+ if (got == -1) {
+ xbt_assert(errno == EINTR, "Cannot read from %s", executable_copy.c_str());
+ } else {
+ char* p = buf;
+ int todo = got;
+ while (int done = write(fdout, p, todo)) {
+ if (done == -1) {
+ xbt_assert(errno == EINTR, "Cannot write into %s", target_executable.c_str());
+ } else {
+ p += done;
+ todo -= done;
+ }
+ }
+ }
+ }
+#endif
close(fdout);
// Load the copy and resolve the entry point:
#cmakedefine01 HAVE_PRIVATIZATION
/* We have PAPI to fine-grain trace execution time */
#cmakedefine01 HAVE_PAPI
+/* We have sendfile to efficiently copy files for dl-open privatization */
+#cmakedefine01 HAVE_SENDFILE
/* Other function checks */
/* Function backtrace */