Consistently round up the memory usage limit in messages.

It still feels a bit wrong to round 1 byte to 1 MiB but
at least it is now done consistently so that the same
byte value is always rounded the same way to MiB.

diff --git a/src/xz/message.c b/src/xz/message.c
index 88efb0c..5dd9bc3 100644 (file)
--- a/src/xz/message.c
+++ b/src/xz/message.c
@@ -1016,7 +1016,8 @@ message_memlimit(void)
                printf("%" PRIu64 "\n", hardware_memlimit_get());
        else
                printf(_("%s MiB (%s bytes)\n"),
-                       uint64_to_str(hardware_memlimit_get() >> 20, 0),
+                       uint64_to_str(
+                               round_up_to_mib(hardware_memlimit_get()), 0),
                        uint64_to_str(hardware_memlimit_get(), 1));
 
        tuklib_exit(E_SUCCESS, E_ERROR, verbosity != V_SILENT);
@@ -1180,7 +1181,7 @@ message_help(bool long_help)
        if (long_help) {
                printf(_(
 "On this system and configuration, this program will use a maximum of roughly\n"
-"%s MiB RAM and "), uint64_to_str(hardware_memlimit_get() / (1024 * 1024), 0));
+"%s MiB RAM and "), uint64_to_str(round_up_to_mib(hardware_memlimit_get()), 0));
                printf(N_("one thread.\n\n", "%s threads.\n\n",
                                hardware_threadlimit_get()),
                                uint64_to_str(hardware_threadlimit_get(), 0));

diff --git a/src/xzdec/xzdec.c b/src/xzdec/xzdec.c
index 6ddf7d2..3b1ab0f 100644 (file)
--- a/src/xzdec/xzdec.c
+++ b/src/xzdec/xzdec.c
@@ -66,6 +66,10 @@ my_errorf(const char *fmt, ...)
 static void lzma_attribute((noreturn))
 help(void)
 {
+       // Round up to the next MiB and do it correctly also with UINT64_MAX.
+       const uint64_t mem_mib = (memlimit >> 20)
+                       + ((memlimit & ((UINT32_C(1) << 20) - 1)) != 0);
+
        printf(
 "Usage: %s [OPTION]... [FILE]...\n"
 "Uncompress files in the ." TOOL_FORMAT " format to the standard output.\n"
@@ -85,8 +89,7 @@ help(void)
 "%" PRIu64 " MiB RAM.\n"
 "\n"
 "Report bugs to <" PACKAGE_BUGREPORT "> (in English or Finnish).\n"
-PACKAGE_NAME " home page: <" PACKAGE_URL ">\n",
-               progname, memlimit / (1024 * 1024));
+PACKAGE_NAME " home page: <" PACKAGE_URL ">\n", progname, mem_mib);
        tuklib_exit(EXIT_SUCCESS, EXIT_FAILURE, display_errors);
 }