hiperf部件不合规修改

Signed-off-by: mashaohua7 <mashaohua7@huawei.com>

include/perf_events.h

@@ -326,11 +326,6 @@ public:
     static constexpr uint64_t DEFAULT_SAMPLE_PERIOD = 1;
     static constexpr uint64_t DEFAULT_TIMEOUT = 10 * 1000;
     static constexpr size_t MIN_BUFFER_SIZE = 64 * 1024 * 1024;
-#ifdef LITTLE_MEMORY
-    static constexpr size_t MAX_BUFFER_SIZE = 128 * 1024 * 1024;
-#else
-    static constexpr size_t MAX_BUFFER_SIZE = 256 * 1024 * 1024;
-#endif
     static constexpr size_t BUFFER_LOW_LEVEL = 10 * 1024 * 1024;
     static constexpr size_t BUFFER_CRITICAL_LEVEL = 5 * 1024 * 1024;
 

include/utilities.h

@@ -73,6 +73,9 @@ constexpr const int HUNDREDS = 100;
 constexpr const int DEFAULT_STRING_BUF_SIZE = 4096;
 constexpr const int FIVE_THOUSANDS = 5000;
 constexpr const int DATA_MAX_SIZE = 1001;
+constexpr const int LITTLE_MEMORY_SIZE = 1;
+constexpr const int MULTIPLE_SIZE = 1024;
+
 #if !is_mingw
 #ifndef O_BINARY
 #define O_BINARY 0
@@ -209,6 +212,8 @@ bool IsDir(const std::string &path);
 
 bool IsPath(const std::string &fileName);
 
+bool LittleMemory();
+
 #if is_mingw
 const char PATH_SEPARATOR = '\\';
 #else

src/perf_events.cpp

@@ -1096,6 +1096,13 @@ std::vector<AttrWithId> PerfEvents::GetAttrWithId() const
 
 size_t PerfEvents::CalcBufferSize()
 {
+    static int MAX_BUFFER_SIZE;
+    if (LittleMemory()) {
+        MAX_BUFFER_SIZE = 128 * 1024 * 1024;
+    }else {
+        MAX_BUFFER_SIZE = 256 * 1024 * 1024;
+    }
+    
     size_t bufferSize = MAX_BUFFER_SIZE;
     if (!systemTarget_) {
         // suppose ring buffer is 4 times as much as mmap

src/utilities.cpp

@@ -670,6 +670,20 @@ const std::string GetUserType()
 #endif
 }
 
+bool LittleMemory() {
+    std::ifstream file("/proc/meminfo");
+    std::string line;
+    while (getline(file, line)) {
+        if (line.find("MemTotal:") != std::string::npos) {
+            int memSize = stoi(line.substr(line.find(":") + 1));
+            if (memSize < (LITTLE_MEMORY_SIZE * MULTIPLE_SIZE * MULTIPLE_SIZE)) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
 // only for domestic beta
 bool IsBeta()
 {