SRS 6.0-b0 源码 + danmaku 后端（排除 objs/3rdparty/测试媒体）

trunk/research/frame/bad_alloc0.cpp

@@ -0,0 +1,11 @@
+/*
+ulimit -S -v 204800
+g++ -g -O0 bad_alloc0.cpp -o bad_alloc && ./bad_alloc
+*/
+#include <stdio.h>
+int main(){
+    char* p1 = new char[193000 * 1024]; // huge allocation
+    char* p0 = new char[100 * 1024]; // small allocation
+    printf("OK\n");
+}
+

trunk/research/frame/bad_alloc1.cpp

@@ -0,0 +1,17 @@
+/*
+ulimit -S -v 204800
+g++ -g -O0 bad_alloc1.cpp -o bad_alloc && ./bad_alloc
+*/
+#include <stdio.h>
+#include <new>
+void handler() {
+    printf("Memory allocate failed\n");
+    std::set_new_handler(NULL); // New will try to alloc again, then abort.
+}
+int main(){
+    std::set_new_handler(handler);
+    char* p1 = new char[193000 * 1024]; // huge allocation
+    char* p0 = new char[100 * 1024]; // small allocation
+    printf("OK\n");
+}
+

trunk/research/frame/frame0.cpp

@@ -0,0 +1,23 @@
+/*
+# https://www.jianshu.com/p/eaa2700ebedc
+g++ frame0.cpp -g -O0 -o frame && ./frame
+*/
+#include <stdio.h>
+#include <stdlib.h>
+
+int callee(int a, long b) {
+    int c = a;
+    c += (int)b;
+    return c;
+}
+void caller() {
+    int v = callee(10, 20);
+    printf("v=%d\n", v);
+}
+
+int main(int argc, char** argv)
+{
+    caller();
+    return 0;
+}
+

trunk/research/frame/frame1.cpp

@@ -0,0 +1,35 @@
+/*
+# https://www.jianshu.com/p/eaa2700ebedc
+g++ frame1.cpp -g -O0 -o frame && ./frame
+*/
+#include <stdio.h>
+#include <stdlib.h>
+
+int callee(int a, long b, long c, int d, long e, int f, int g, int h) {
+    int v = a;
+    v += (int)b;
+    v += (int)c;
+    v += (int)e;
+    v += (int)g;
+    v += (int)h;
+    return v;
+}
+void caller() {
+    int a = 10;
+    int b = 20;
+    long c = 30;
+    int d = 40;
+    int e = 50;
+    int f = 60;
+    int g = 70;
+    int h = 80;
+    int v = callee(a, b, c, d, e, f, g, h);
+    printf("v=%d, c=%ld\n", v, c);
+}
+
+int main(int argc, char** argv)
+{
+    caller();
+    return 0;
+}
+

trunk/research/frame/mmap0.cpp

@@ -0,0 +1,31 @@
+/*
+g++ mmap0.cpp -g -O0 -o mmap && ./mmap
+*/
+#include <stdio.h>
+#include <assert.h>
+#include <sys/mman.h>
+#include <string.h>
+
+int main(int argc, char** argv)
+{
+    int zero_fd = -1;
+    int size = 64 * 1024;
+    int mmap_flags = MAP_PRIVATE | MAP_ANON;
+    char* vaddr = (char*)mmap(NULL, size, PROT_READ | PROT_WRITE, mmap_flags, zero_fd, 0);
+    assert (vaddr != (void *)MAP_FAILED);
+    printf("vaddr=%p, size=%d\n", vaddr, size);
+
+    vaddr[0] = 0x0f;
+    printf("OK: access vaddr p[0]=%x\n", vaddr[0]);
+
+    int REDZONE = 4096;
+    mprotect(vaddr, REDZONE, PROT_NONE);
+    printf("protect vaddr=%p, [0, %d]\n", vaddr, REDZONE);
+
+    printf("try to access vaddr\n");
+    vaddr[0] = 0x0f;
+    printf("OK: access vaddr p[0]=%x\n", vaddr[0]);
+
+    return 0;
+}
+

trunk/research/frame/mmap1.cpp

@@ -0,0 +1,30 @@
+/*
+g++ mmap1.cpp -g -O0 -o mmap && ./mmap
+*/
+#include <stdio.h>
+#include <assert.h>
+#include <sys/mman.h>
+#include <string.h>
+
+int main(int argc, char** argv)
+{
+    int zero_fd = -1;
+    int size = 64 * 1024;
+    int mmap_flags = MAP_PRIVATE | MAP_ANON;
+    char* vaddr = (char*)mmap(NULL, size, PROT_READ | PROT_WRITE, mmap_flags, zero_fd, 0);
+    assert (vaddr != (void *)MAP_FAILED);
+    printf("vaddr=%p, size=%d\n", vaddr, size);
+
+    vaddr[0] = 0x0f;
+    printf("OK: access vaddr p[0]=%x\n", vaddr[0]);
+
+    munmap(vaddr, size);
+    printf("munmap vaddr=%p, size=%d\n", vaddr, size);
+
+    printf("try to access vaddr\n");
+    vaddr[0] = 0x0f;
+    printf("OK: access vaddr p[0]=%x\n", vaddr[0]);
+
+    return 0;
+}
+

trunk/research/frame/st0.cpp

@@ -0,0 +1,14 @@
+/*
+g++ st0.cpp ../../objs/st/libst.a -g -O0 -o st && ./st
+*/
+#include <stdio.h>
+#include "../../objs/st/st.h"
+
+int main(int argc, char** argv) {
+    st_init();
+    for (;;) {
+        st_usleep(1000 * 1000);
+    }
+    return 0;
+}
+