lib: Purge some use of boost::system_time

These are all timeout loops, which now use
std::chrono::steady_clock::now() to check for timeout events.

2 files changed, 16 insertions, 8 deletions

diff --git a/host/lib/usrp/x300/x300_fw_uart.cpp b/host/lib/usrp/x300/x300_fw_uart.cpp
index 3711cb48b..b6c2081ad 100644
--- a/host/lib/usrp/x300/x300_fw_uart.cpp
+++ b/host/lib/usrp/x300/x300_fw_uart.cpp
@@ -12,7 +12,7 @@
 #include <uhd/types/serial.hpp>
 #include <uhd/exception.hpp>
 #include <boost/format.hpp>
-#include <boost/thread/thread.hpp>
+#include <chrono>
 
 using namespace uhd;
 
@@ -126,7 +126,10 @@ struct x300_uart_iface : uart_iface
     std::string read_uart(double timeout)
     {
         boost::mutex::scoped_lock(_read_mutex);
-        const boost::system_time exit_time = boost::get_system_time() + boost::posix_time::microseconds(long(timeout*1e6));
+        const auto exit_time =
+            std::chrono::steady_clock::now()
+            + std::chrono::microseconds(int64_t(timeout*1e6));
+
         std::string buff;
 
         while (true)
@@ -149,8 +152,9 @@ struct x300_uart_iface : uart_iface
             }
 
             // no more characters - check time
-            if (boost::get_system_time() > exit_time)
+            if (std::chrono::steady_clock::now() > exit_time) {
                 break;
+            }
         }
 
         return buff;
diff --git a/host/lib/usrp/x300/x300_impl.cpp b/host/lib/usrp/x300/x300_impl.cpp
index 2627ff1a2..b7fd58444 100644
--- a/host/lib/usrp/x300/x300_impl.cpp
+++ b/host/lib/usrp/x300/x300_impl.cpp
@@ -1583,8 +1583,10 @@ void x300_impl::claimer_loop(wb_iface::sptr iface)
 x300_impl::claim_status_t x300_impl::claim_status(wb_iface::sptr iface)
 {
     claim_status_t claim_status = CLAIMED_BY_OTHER; // Default to most restrictive
-    boost::system_time timeout_time = boost::get_system_time() + boost::posix_time::seconds(1);
-    while (boost::get_system_time() < timeout_time)
+    auto timeout_time =
+        std::chrono::steady_clock::now()
+        + std::chrono::seconds(1);
+    while (std::chrono::steady_clock::now() < timeout_time)
     {
         //If timed out, then device is definitely unclaimed
         if (iface->peek32(X300_FW_SHMEM_ADDR(X300_FW_SHMEM_CLAIM_STATUS)) == 0)
@@ -1616,9 +1618,12 @@ void x300_impl::claim(wb_iface::sptr iface)
     iface->poke32(X300_FW_SHMEM_ADDR(X300_FW_SHMEM_CLAIM_SRC), get_process_hash());
 }
 
-bool x300_impl::try_to_claim(wb_iface::sptr iface, long timeout)
+bool x300_impl::try_to_claim(wb_iface::sptr iface, long timeout_ms)
 {
     boost::system_time start_time = boost::get_system_time();
+    const auto timeout_time =
+        std::chrono::steady_clock::now()
+        + std::chrono::milliseconds(timeout_ms);
     while (1)
     {
         claim_status_t status = claim_status(iface);
@@ -1633,8 +1638,7 @@ bool x300_impl::try_to_claim(wb_iface::sptr iface, long timeout)
         {
             break;
         }
-        if (boost::get_system_time() - start_time > boost::posix_time::milliseconds(timeout))
-        {
+        if (std::chrono::steady_clock::now() > timeout_time) {
             // Another process owns the device - give up
             return false;
         }