Move SchedAttr__ to syscall

As part of a refactoring required to implement functions not yet
available in the libraries provided by Kleaf's sysroot, move the data
structure that mimicks sched_attr in sched/types.h into the
syscall-related code.

Test: build
Bug: 322744630
Change-Id: I05ca8ffb2ef36b29708dfc0340635fb2c2162037
Signed-off-by: Alessio Balsini <balsini@google.com>

4 files changed, 29 insertions, 32 deletions

diff --git a/include/ditto/multithreading_utils.h b/include/ditto/multithreading_utils.h
index b1ca472..b8295be 100644
--- a/include/ditto/multithreading_utils.h
+++ b/include/ditto/multithreading_utils.h
@@ -21,6 +21,7 @@
 #endif
 
 #include <ditto/logger.h>
+#include <ditto/syscall.h>
 
 #include <sys/syscall.h>
 #include <unistd.h>
@@ -37,23 +38,6 @@ enum SchedPolicy {
   SchedDeadline = 6,
 };
 
-struct SchedAttr__ {
-  uint32_t size;         /* Size of this structure */
-  uint32_t sched_policy; /* Policy (SCHED_*) */
-  uint64_t sched_flags;  /* Flags */
-
-  int32_t sched_nice;      /* Nice value (SCHED_OTHER,
-                              SCHED_BATCH) */
-  uint32_t sched_priority; /* Static priority (SCHED_FIFO,
-                              SCHED_RR) */
-  /* Remaining fields are for SCHED_DEADLINE */
-  uint64_t sched_runtime;
-  uint64_t sched_deadline;
-  uint64_t sched_period;
-};
-
-std::string to_string(const SchedAttr__& attr);
-
 class SchedAttr {
   bool initialized_ = false;
   SchedAttr__ sched_attr_;
diff --git a/include/ditto/syscall.h b/include/ditto/syscall.h
index c7e3af8..e51cc95 100644
--- a/include/ditto/syscall.h
+++ b/include/ditto/syscall.h
@@ -25,6 +25,23 @@
 
 namespace dittosuite {
 
+struct SchedAttr__ {
+  uint32_t size;         /* Size of this structure */
+  uint32_t sched_policy; /* Policy (SCHED_*) */
+  uint64_t sched_flags;  /* Flags */
+
+  int32_t sched_nice;      /* Nice value (SCHED_OTHER,
+                                    SCHED_BATCH) */
+  uint32_t sched_priority; /* Static priority (SCHED_FIFO,
+                                          SCHED_RR) */
+  /* Remaining fields are for SCHED_DEADLINE */
+  uint64_t sched_runtime;
+  uint64_t sched_deadline;
+  uint64_t sched_period;
+};
+
+std::string to_string(const SchedAttr__& attr);
+
 class SyscallInterface {
  public:
   virtual ~SyscallInterface() {}
diff --git a/src/multithreading_utils.cpp b/src/multithreading_utils.cpp
index 9b9716f..b3355d6 100644
--- a/src/multithreading_utils.cpp
+++ b/src/multithreading_utils.cpp
@@ -19,21 +19,6 @@
 
 namespace dittosuite {
 
-std::string to_string(const SchedAttr__& attr) {
-  std::string ret;
-
-  ret += "size: " + std::to_string(attr.size);
-  ret += ", policy: " + std::to_string(attr.sched_policy);
-  ret += ", flags: " + std::to_string(attr.sched_flags);
-  ret += ", nice: " + std::to_string(attr.sched_nice);
-  ret += ", priority: " + std::to_string(attr.sched_priority);
-  ret += ", runtime: " + std::to_string(attr.sched_runtime);
-  ret += ", deadline: " + std::to_string(attr.sched_deadline);
-  ret += ", period: " + std::to_string(attr.sched_period);
-
-  return ret;
-}
-
 bool SchedAttr::IsSet() const { return initialized_; }
 
 void SchedAttr::Set() const {
diff --git a/src/syscall.cpp b/src/syscall.cpp
index 83e6cee..13d81e0 100644
--- a/src/syscall.cpp
+++ b/src/syscall.cpp
@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#include <sstream>
+
 #include <ditto/syscall.h>
 
 namespace dittosuite {
@@ -85,4 +87,13 @@ int64_t Syscall::Write(int fd, char* buf, int64_t count, int64_t offset) {
   return pwrite64(fd, buf, count, offset);
 }
 
+std::string to_string(const SchedAttr__& attr) {
+  std::stringstream ss;
+  ss << "size: " << attr.size << ", policy: " << attr.sched_policy
+     << ", flags: " << attr.sched_flags << ", nice: " << attr.sched_nice
+     << ", priority: " << attr.sched_priority << ", runtime: " << attr.sched_runtime
+     << ", deadline: " << attr.sched_deadline << ", period: " << attr.sched_period;
+  return ss.str();
+}
+
 }  // namespace dittosuite