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Update mmap implementation

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Always map memory as writable, but private when read-only
This commit is contained in:
topjohnwu
2021-01-12 22:50:55 -08:00
parent 9a28dd4f6e
commit f2cb3c38fe
9 changed files with 58 additions and 73 deletions
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30
native/jni/init/raw_data.cpp
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@@ -2,7 +2,7 @@
using namespace std;
int data_holder::patch(str_pairs list) {
int mmap_data::patch(str_pairs list) {
if (buf == nullptr)
return 0;
int count = 0;
@@ -20,7 +20,7 @@ int data_holder::patch(str_pairs list) {
return count;
}
bool data_holder::contains(string_view pattern) {
bool mmap_data::contains(string_view pattern) {
if (buf == nullptr)
return false;
for (uint8_t *p = buf, *eof = buf + sz; p < eof; ++p) {
@@ -32,33 +32,21 @@ bool data_holder::contains(string_view pattern) {
return false;
}
void data_holder::consume(data_holder &other) {
void mmap_data::consume(mmap_data &other) {
buf = other.buf;
sz = other.sz;
other.buf = nullptr;
other.sz = 0;
}
auto_data<HEAP> raw_data::read(int fd) {
auto_data<HEAP> data;
fd_full_read(fd, data.buf, data.sz);
mmap_data mmap_data::rw(const char *name) {
mmap_data data;
mmap_rw(name, data.buf, data.sz);
return data;
}
auto_data<HEAP> raw_data::read(const char *name) {
auto_data<HEAP> data;
full_read(name, data.buf, data.sz);
return data;
}
auto_data<MMAP> raw_data::mmap_rw(const char *name) {
auto_data<MMAP> data;
::mmap_rw(name, data.buf, data.sz);
return data;
}
auto_data<MMAP> raw_data::mmap_ro(const char *name) {
auto_data<MMAP> data;
::mmap_ro(name, data.buf, data.sz);
mmap_data mmap_data::ro(const char *name) {
mmap_data data;
mmap_ro(name, data.buf, data.sz);
return data;
}