Checkpointing.

src/ReadTask.cpp

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+
+#include "ReadTask.h"
+
+using namespace std;
+
+namespace storagemanager
+{
+
+ReadTask::ReadTask(int sock, uint len) : PosixTask(sock, len)
+{
+}
+
+ReadTask::~ReadTask()
+{
+}
+
+void ReadTask::run()
+{
+
+    // get the parameters
+    bool success;
+    uint8_t *buf = alloca(getLength());
+    int boff = 0;
+    success = read(&buf, getLength());
+    uint flen = *((uint *) &buf[0])
+    boff += 4;
+    string filename(&buf[boff], flen);
+    boff += flen;
+    size_t count = *((size_t *) &buf[boff]);
+    boff += sizeof(size_t);
+    off_t offset = *((off_t *) &buf[boff]);
+    
+    // read from IOC, write to the socket
+    vector<uint8_t> outbuf;
+    outbuf.resize(count + SM_HEADER_LEN);
+    uint32_t *outbuf32 = (uint32_t *) &outbuf[0];
+    outbuf32[0] = SM_MSG_START;
+    outbuf32[1] = length;
+    
+    // do the reading and writing in chunks
+    // IOC->willRead(filename, offset, length);
+    // IOC->read(filename, offset, length, &outbuf[SM_HEADER_LEN]);
+    
+    write(outbuf);
+}
+
+
+
+}