From 86682974bb63f2c8cae4ac57941d9f055ce21262 Mon Sep 17 00:00:00 2001
From: Rahix <rahix@rahix.de>
Date: Thu, 4 Jul 2019 13:30:20 +0200
Subject: [PATCH] fix(pycardium): Assert against double-calls
Signed-off-by: Rahix <rahix@rahix.de>
---
epicardium/api/caller.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/epicardium/api/caller.c b/epicardium/api/caller.c
index 3b6d27b9a..9dc240ecb 100644
--- a/epicardium/api/caller.c
+++ b/epicardium/api/caller.c
@@ -2,11 +2,25 @@
#include "sema.h"
#include "api/caller.h"
+#define MXC_ASSERT_ENABLE
+#include "mxc_assert.h"
+
void*_api_call_start(api_id_t id, uintptr_t size)
{
while (SEMA_GetSema(_API_SEMAPHORE) == E_BUSY) {}
- /* TODO: Check flag */
+ if (API_CALL_MEM->call_flag != _API_FLAG_IDLE) {
+ /*
+ * The only way this can happen is if a call was issued from an
+ * interrupt hander while another call is still happening. This
+ * has to be prevented at all cost!
+ */
+ mxc_assert(
+ "API recalled during ongoing call!",
+ __FILE__,
+ __LINE__
+ );
+ }
API_CALL_MEM->id = id;
return API_CALL_MEM->buffer;
--
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