Effectively tossing libeio away.

1 files changed, 93 insertions, 30 deletions

diff --git a/src/Input.cc b/src/Input.cc
index 3608cd0..5e8c36c 100644
--- a/src/Input.cc
+++ b/src/Input.cc
@@ -3,9 +3,10 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
-#include "eio.h"
+#include "Async.h"
 #include "Input.h"
 #include "Task.h"
+#include "TaskMan.h"
 #include "Printer.h"
 
 #ifdef _WIN32
@@ -19,33 +20,52 @@ static const char * strerror_r(int errorno, char * buf, size_t bufsize) {
 }
 #endif
 
+namespace {
+
 struct cbResults_t {
     Balau::Events::Custom evt;
     int result, errorno;
 };
 
-static int eioDone(eio_req * req) {
-    cbResults_t * cbResults = (cbResults_t *) req->data;
-    cbResults->result = req->result;
-    cbResults->errorno = req->errorno;
-    cbResults->evt.doSignal();
-    return 0;
-}
+class AsyncOpOpen : public Balau::AsyncOperation {
+  public:
+      AsyncOpOpen(const char * path, cbResults_t * results) : m_path(path), m_results(results) { }
+    virtual void run() {
+        int r = m_results->result = open(m_path, O_RDONLY);
+        m_results->errorno = r < 0 ? errno : 0;
+    }
+    virtual void done() {
+        m_results->evt.doSignal();
+        delete this;
+    }
+  private:
+    const char * m_path;
+    cbResults_t * m_results;
+};
 
 struct cbStatsResults_t {
     Balau::Events::Custom evt;
     int result, errorno;
-    EIO_STRUCT_STAT statdata;
+    struct stat statdata;
 };
 
-static int eioStatsDone(eio_req * req) {
-    cbStatsResults_t * cbStatsResults = (cbStatsResults_t *) req->data;
-    cbStatsResults->result = req->result;
-    cbStatsResults->errorno = req->errorno;
-    cbStatsResults->statdata = *(EIO_STRUCT_STAT *) req->ptr2;
-    cbStatsResults->evt.doSignal();
-    return 0;
-}
+class AsyncOpStat : public Balau::AsyncOperation {
+  public:
+      AsyncOpStat(int fd, cbStatsResults_t * results) : m_fd(fd), m_results(results) { }
+    virtual void run() {
+        int r = m_results->result = fstat(m_fd, &m_results->statdata);
+        m_results->errorno = r < 0 ? errno : 0;
+    }
+    virtual void done() {
+        m_results->evt.doSignal();
+        delete this;
+    }
+  private:
+    int m_fd;
+    cbStatsResults_t * m_results;
+};
+
+};
 
 Balau::Input::Input(const char * fname) throw (GeneralException) {
     m_name.set("Input(%s)", fname);
@@ -54,14 +74,13 @@ Balau::Input::Input(const char * fname) throw (GeneralException) {
     Printer::elog(E_INPUT, "Opening file %s", fname);
 
     cbResults_t cbResults;
-    eio_req * r = eio_open(fname, O_RDONLY, 0, 0, eioDone, &cbResults);
-    EAssert(r != NULL, "eio_open returned a NULL eio_req");
+    createAsyncOp(new AsyncOpOpen(fname, &cbResults));
     Task::operationYield(&cbResults.evt);
     if (cbResults.result < 0) {
-        char str[4096];
         if (cbResults.errorno == ENOENT) {
             throw ENoEnt(fname);
         } else {
+            char str[4096];
             throw GeneralException(String("Unable to open file ") + m_name + " for reading: " + strerror_r(cbResults.errorno, str, sizeof(str)) + " (err#" + cbResults.errorno + ")");
         }
     } else {
@@ -69,8 +88,7 @@ Balau::Input::Input(const char * fname) throw (GeneralException) {
     }
 
     cbStatsResults_t cbStatsResults;
-    r = eio_fstat(m_fd, 0, eioStatsDone, &cbStatsResults);
-    EAssert(r != NULL, "eio_fstat returned a NULL eio_req");
+    createAsyncOp(new AsyncOpStat(m_fd, &cbStatsResults));
     Task::operationYield(&cbStatsResults.evt);
     if (cbStatsResults.result == 0) {
         m_size = cbStatsResults.statdata.st_size;
@@ -78,27 +96,72 @@ Balau::Input::Input(const char * fname) throw (GeneralException) {
     }
 }
 
+namespace {
+
+class AsyncOpClose : public Balau::AsyncOperation {
+  public:
+      AsyncOpClose(int fd, cbResults_t * results) : m_fd(fd), m_results(results) { }
+    virtual void run() {
+        int r = m_results->result = close(m_fd);
+        m_results->errorno = r < 0 ? errno : 0;
+    }
+    virtual void done() {
+        m_results->evt.doSignal();
+        delete this;
+    }
+  private:
+    int m_fd;
+    cbResults_t * m_results;
+};
+
+};
+
 void Balau::Input::close() throw (GeneralException) {
     if (m_fd < 0)
         return;
     cbResults_t cbResults;
-    eio_req * r = eio_close(m_fd, 0, eioDone, &cbResults);
-    EAssert(r != NULL, "eio_close returned a NULL eio_req");
-    m_fd = -1;
+    createAsyncOp(new AsyncOpClose(m_fd, &cbResults));
     Task::operationYield(&cbResults.evt);
+    m_fd = -1;
     if (cbResults.result < 0) {
         char str[4096];
         strerror_r(cbResults.errorno, str, sizeof(str));
         throw GeneralException(String("Unable to close file ") + m_name + ": " + str);
-    } else {
-        m_fd = cbResults.result;
     }
 }
 
+namespace {
+
+struct cbReadResults_t {
+    Balau::Events::Custom evt;
+    ssize_t result;
+    int errorno;
+};
+
+class AsyncOpRead : public Balau::AsyncOperation {
+  public:
+      AsyncOpRead(int fd, void * buf, size_t count, off_t offset, cbReadResults_t * results) : m_fd(fd), m_buf(buf), m_count(count), m_offset(offset), m_results(results) { }
+    virtual void run() {
+        ssize_t r = m_results->result = pread(m_fd, m_buf, m_count, m_offset);
+        m_results->errorno = r < 0 ? errno : 0;
+    }
+    virtual void done() {
+        m_results->evt.doSignal();
+        delete this;
+    }
+  private:
+    int m_fd;
+    void * m_buf;
+    size_t m_count;
+    off_t m_offset;
+    cbReadResults_t * m_results;
+};
+
+};
+
 ssize_t Balau::Input::read(void * buf, size_t count) throw (GeneralException) {
-    cbResults_t cbResults;
-    eio_req * r = eio_read(m_fd, buf, count, getROffset(), 0, eioDone, &cbResults);
-    EAssert(r != NULL, "eio_read returned a NULL eio_req");
+    cbReadResults_t cbResults;
+    createAsyncOp(new AsyncOpRead(m_fd, buf, count, getROffset(), &cbResults));
     Task::operationYield(&cbResults.evt);
     if (cbResults.result > 0) {
         rseek(cbResults.result, SEEK_CUR);