1 files changed, 124 insertions, 0 deletions
diff --git a/Transceiver52M/l1if.cpp b/Transceiver52M/l1if.cpp
new file mode 100644
index 0000000..440f6e7
--- /dev/null
+++ b/Transceiver52M/l1if.cpp
@@ -0,0 +1,124 @@
+#include <mutex>
+#include <queue>
+#include <deque>
+#include <condition_variable>
+#include <iostream>
+
+extern "C" {
+
+#include <unistd.h>
+#include <sys/eventfd.h>
+
+#include <osmocom/core/utils.h>
+#include <osmocom/core/select.h>
+}
+#include "l1if.h"
+
+using namespace std;
+using namespace std::chrono_literals;
+
+template<typename Data>
+class spsc_q{
+
+    std::queue<Data> m_q;
+    std::mutex m_mtx;
+    std::condition_variable m_cond;
+    bool killme;
+
+public:
+    spsc_q() : killme{ false } { }
+
+    void push(Data i){
+        std::unique_lock<std::mutex> lock(m_mtx);
+        m_q.push(i);
+        m_cond.notify_one();
+    }
+
+    Data pop(){
+        std::unique_lock<std::mutex> lock(m_mtx);
+        m_cond.wait_for(lock, 100ms, [&](){ return !m_q.empty() || killme; });
+
+        if (killme || m_q.empty()){
+                return {};
+            }
+
+        Data x = m_q.front();
+        m_q.pop();
+
+        return x;
+    }
+
+    void stop(){
+        killme = true;
+        m_cond.notify_all();
+    }
+
+    auto sz() { return m_q.size(); }
+};
+
+
+/*
+ * trxif_from_trx_c <-> push_c
+ * trxif_to_trx_c <-> pop_c
+ * trxif_from_trx_d <-> push_d
+ * trxif_to_trx_d <-> pop_d
+ * ...
+ *
+ *
+ */
+class trxl1if {
+public:
+    spsc_q<TRX_C*> c_to_trx;
+    spsc_q<TRX_C*> c_from_trx;
+
+    spsc_q<trxd_to_trx*> d_to_trx;
+    spsc_q<trxd_from_trx*> d_from_trx;
+
+    struct osmo_fd g_event_ofd_C;
+    struct osmo_fd g_event_ofd_D;
+};
+
+trxl1if trxif;
+
+void push_c(TRX_C* i) {
+	uint64_t one = 1;
+	int rc;
+	trxif.c_from_trx.push(i);
+	std::clog << trxif.c_from_trx.sz() << std::endl;
+	rc = ::write(trxif.g_event_ofd_C.fd, &one, sizeof(one));
+	return;
+};
+TRX_C* pop_c() {
+	return trxif.c_to_trx.pop();
+};
+void push_d(trxd_from_trx* i) {
+	uint64_t one = 1;
+	int rc;
+	trxif.d_from_trx.push(i);
+	rc = ::write(trxif.g_event_ofd_D.fd, &one, sizeof(one));
+	return;
+};
+trxd_to_trx* pop_d() {
+	return trxif.d_to_trx.pop();
+};
+
+extern "C" {
+char* trxif_from_trx_c() {
+    uint64_t one = 1;
+    ::read(trxif.g_event_ofd_C.fd, &one, sizeof(one));
+    return (char*)trxif.c_from_trx.pop();
+}
+void trxif_to_trx_c(char* msg) {
+    trxif.c_to_trx.push((TRX_C*)msg);
+}
+trxd_from_trx* trxif_from_trx_d() {
+    uint64_t one = 1;
+    ::read(trxif.g_event_ofd_D.fd, &one, sizeof(one));
+    return trxif.d_from_trx.pop();
+}
+void trxif_to_trx_d(trxd_to_trx* msg) {
+    trxif.d_to_trx.push(msg);
+}
+struct osmo_fd* get_c_fd() { return &trxif.g_event_ofd_C;}
+struct osmo_fd* get_d_fd() { return &trxif.g_event_ofd_D;}
+}