Commit: 7a2292b22aa3081f5de0c759bdcc5d9a0d1b55dc
Parent: d4de4a4808aa835e8bcb04a4e989b0070bc4417f
Author: Randy Palamar
Date: Wed, 3 Apr 2024 10:12:37 -0600
move platform specific code to separate file
code is still compiled as single translation unit I just did this
because I intend on readding win32 support later.
Diffstat:
| M | mc.c | | | 43 | ++++++++++++++++++++++++++++--------------- |
| A | posix.c | | | 40 | ++++++++++++++++++++++++++++++++++++++++ |
2 files changed, 68 insertions(+), 15 deletions(-)
diff --git a/mc.c b/mc.c
@@ -57,6 +57,16 @@ typedef struct {
static Mat2 Rd_xy;
static u64 rand_state[2];
+static void die(const char *, ...);
+
+#if defined(__unix__) || defined(__APPLE__)
+#include "posix.c"
+#elif defined(_WIN32)
+#error Win32 is currently unsupported!
+#else
+#error Unsupported Platform!
+#endif
+
static void
die(const char *fmt, ...)
{
@@ -115,36 +125,39 @@ dump_output(s8 pre)
s8 rd = s8("_Rd_xy.csv");
s8 cat[2] = { pre, xy };
s8 out = s8concat(cat, 2);
+ os_file f = os_open(out, OS_WRITE);
+
+ u8 dbuf[4096];
+ s8 buf = { .data = dbuf };
- FILE *fd = fopen((char *)out.data, "w");
- if (fd == NULL)
- die("rip can't open output file: %s\n", out.data);
- fputs("x [cm]\ty [cm]\n", fd);
+ os_write(f, s8("x [cm]\ty [cm]\n"));
for (u32 i = 0; i < gctx.Nx; i++) {
f64 x = (i + 0.5) * gctx.dx - gctx.xoff;
f64 y = (i + 0.5) * gctx.dy - gctx.yoff;
- fprintf(fd, "%e\t%e\n", x, y);
+ buf.len = snprintf((char *)buf.data, sizeof(dbuf),
+ "%e\t%e\n", x, y);
+ os_write(f, buf);
}
- fclose(fd);
+ os_close(f);
free(out.data);
cat[1] = rd;
out = s8concat(cat, 2);
-
- fd = fopen((char *)out.data, "w");
- if (fd == NULL)
- die("rip can't open output file: %s\n", out.data);
+ f = os_open(out, OS_WRITE);
f64 scale = gctx.N_photons * gctx.dx * gctx.dy;
f64 *b = Rd_xy.b;
for (u32 i = 0; i < Rd_xy.Nx; i++) {
- for (u32 j = 0; j < Rd_xy.Ny; j++)
- fprintf(fd, "%e,", b[j] / scale);
- fseek(fd, -1, SEEK_CUR);
- fputc('\n', fd);
+ for (u32 j = 0; j < Rd_xy.Ny; j++) {
+ buf.len = snprintf((char *)buf.data, sizeof(dbuf),
+ "%e,", b[j] / scale);
+ os_write(f, buf);
+ }
+ os_seek(f, -1, OS_SEEK_CUR);
+ os_write(f, s8("\n"));
b += Rd_xy.Ny;
}
- fclose(fd);
+ os_close(f);
free(out.data);
}
diff --git a/posix.c b/posix.c
@@ -0,0 +1,40 @@
+#include <fcntl.h>
+#include <unistd.h>
+
+#define OS_READ O_RDONLY
+#define OS_WRITE O_WRONLY
+#define OS_RW O_RDWR
+#define OS_SEEK_CUR SEEK_CUR
+#define OS_SEEK_END SEEK_END
+#define OS_SEEK_SET SEEK_SET
+
+typedef int os_file;
+
+static os_file
+os_open(s8 path, int flags)
+{
+ os_file f;
+ f = open((char *)path.data, flags);
+ if (f == -1)
+ die("rip can't open output file: %s\n", path.data);
+ return f;
+}
+
+static void
+os_write(os_file f, s8 s)
+{
+ if (write(f, s.data, s.len) == -1)
+ die("can't write to file\n");
+}
+
+static void
+os_close(os_file f)
+{
+ close(f);
+}
+
+static void
+os_seek(os_file f, size off, int whence)
+{
+ lseek(f, off, whence);
+}